251819820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:370

約数の個数: 288

約数和(自身を含む): 943810560

約数和(自身を除く): 691990740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 49, 54, 60, 62, 63, 70, 84, 90, 93, 98, 105, 108, 124, 126, 135, 140, 147, 155, 180, 186, 189, 196, 210, 217, 245, 252, 270, 279, 294, 307, 310, 315, 372, 378, 420, 434, 441, 465, 490, 540, 558, 588, 614, 620, 630, 651, 735, 756, 837, 868, 882, 921, 930, 945, 980, 1085, 1116, 1228, 1260, 1302, 1323, 1395, 1470, 1519, 1535, 1674, 1764, 1842, 1860, 1890, 1953, 2149, 2170, 2205, 2604, 2646, 2763, 2790, 2940, 3038, 3070, 3255, 3348, 3684, 3780, 3906, 4185, 4298, 4340, 4410, 4557, 4605, 5292, 5526, 5580, 5859, 6076, 6140, 6447, 6510, 6615, 7595, 7812, 8289, 8370, 8596, 8820, 9114, 9210, 9517, 9765, 10745, 11052, 11718, 12894, 13020, 13230, 13671, 13815, 15043, 15190, 16578, 16740, 18228, 18420, 19034, 19341, 19530, 21490, 22785, 23436, 25788, 26460, 27342, 27630, 28551, 29295, 30086, 30380, 32235, 33156, 38068, 38682, 39060, 41013, 41445, 42980, 45129, 45570, 47585, 54684, 55260, 57102, 58023, 58590, 60172, 64470, 66619, 68355, 75215, 77364, 82026, 82890, 85653, 90258, 91140, 95170, 96705, 114204, 116046, 117180, 128940, 133238, 135387, 136710, 142755, 150430, 164052, 165780, 171306, 180516, 190340, 193410, 199857, 205065, 225645, 232092, 256959, 266476, 270774, 273420, 285510, 290115, 300860, 333095, 342612, 386820, 399714, 406161, 410130, 428265, 451290, 466333, 513918, 541548, 571020, 580230, 599571, 666190, 676935, 799428, 812322, 820260, 856530, 902580, 932666, 999285, 1027836, 1160460, 1199142, 1284795, 1332380, 1353870, 1398999, 1624644, 1713060, 1798713, 1865332, 1998570, 2030805, 2331665, 2398284, 2569590, 2707740, 2797998, 2997855, 3597426, 3997140, 4061610, 4196997, 4663330, 5139180, 5595996, 5995710, 6994995, 7194852, 8123220, 8393994, 8993565, 9326660, 11991420, 12590991, 13989990, 16787988, 17987130, 20984985, 25181982, 27979980, 35974260, 41969970, 50363964, 62954955, 83939940, 125909910, 251819820]

約数ペア:

[(1, 251819820), (2, 125909910), (3, 83939940), (4, 62954955), (5, 50363964), (6, 41969970), (7, 35974260), (9, 27979980), (10, 25181982), (12, 20984985), (14, 17987130), (15, 16787988), (18, 13989990), (20, 12590991), (21, 11991420), (27, 9326660), (28, 8993565), (30, 8393994), (31, 8123220), (35, 7194852), (36, 6994995), (42, 5995710), (45, 5595996), (49, 5139180), (54, 4663330), (60, 4196997), (62, 4061610), (63, 3997140), (70, 3597426), (84, 2997855), (90, 2797998), (93, 2707740), (98, 2569590), (105, 2398284), (108, 2331665), (124, 2030805), (126, 1998570), (135, 1865332), (140, 1798713), (147, 1713060), (155, 1624644), (180, 1398999), (186, 1353870), (189, 1332380), (196, 1284795), (210, 1199142), (217, 1160460), (245, 1027836), (252, 999285), (270, 932666), (279, 902580), (294, 856530), (307, 820260), (310, 812322), (315, 799428), (372, 676935), (378, 666190), (420, 599571), (434, 580230), (441, 571020), (465, 541548), (490, 513918), (540, 466333), (558, 451290), (588, 428265), (614, 410130), (620, 406161), (630, 399714), (651, 386820), (735, 342612), (756, 333095), (837, 300860), (868, 290115), (882, 285510), (921, 273420), (930, 270774), (945, 266476), (980, 256959), (1085, 232092), (1116, 225645), (1228, 205065), (1260, 199857), (1302, 193410), (1323, 190340), (1395, 180516), (1470, 171306), (1519, 165780), (1535, 164052), (1674, 150430), (1764, 142755), (1842, 136710), (1860, 135387), (1890, 133238), (1953, 128940), (2149, 117180), (2170, 116046), (2205, 114204), (2604, 96705), (2646, 95170), (2763, 91140), (2790, 90258), (2940, 85653), (3038, 82890), (3070, 82026), (3255, 77364), (3348, 75215), (3684, 68355), (3780, 66619), (3906, 64470), (4185, 60172), (4298, 58590), (4340, 58023), (4410, 57102), (4557, 55260), (4605, 54684), (5292, 47585), (5526, 45570), (5580, 45129), (5859, 42980), (6076, 41445), (6140, 41013), (6447, 39060), (6510, 38682), (6615, 38068), (7595, 33156), (7812, 32235), (8289, 30380), (8370, 30086), (8596, 29295), (8820, 28551), (9114, 27630), (9210, 27342), (9517, 26460), (9765, 25788), (10745, 23436), (11052, 22785), (11718, 21490), (12894, 19530), (13020, 19341), (13230, 19034), (13671, 18420), (13815, 18228), (15043, 16740), (15190, 16578)]