31912020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 288

約数和(自身を含む): 123002880

約数和(自身を除く): 91090860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 31, 35, 36, 38, 42, 43, 45, 57, 60, 62, 63, 70, 76, 84, 86, 90, 93, 95, 105, 114, 124, 126, 129, 133, 140, 155, 171, 172, 180, 186, 190, 210, 215, 217, 228, 252, 258, 266, 279, 285, 301, 310, 315, 342, 372, 380, 387, 399, 420, 430, 434, 465, 516, 532, 558, 570, 589, 602, 620, 630, 645, 651, 665, 684, 774, 798, 817, 855, 860, 868, 903, 930, 1085, 1116, 1140, 1178, 1197, 1204, 1260, 1290, 1302, 1330, 1333, 1395, 1505, 1548, 1596, 1634, 1710, 1767, 1806, 1860, 1935, 1953, 1995, 2170, 2356, 2394, 2451, 2580, 2604, 2660, 2666, 2709, 2790, 2945, 3010, 3255, 3268, 3420, 3534, 3612, 3870, 3906, 3990, 3999, 4085, 4123, 4340, 4515, 4788, 4902, 5301, 5332, 5418, 5580, 5719, 5890, 5985, 6020, 6510, 6665, 7068, 7353, 7740, 7812, 7980, 7998, 8170, 8246, 8835, 9030, 9331, 9765, 9804, 10602, 10836, 11438, 11780, 11970, 11997, 12255, 12369, 13020, 13330, 13545, 14706, 15996, 16340, 16492, 17157, 17670, 18060, 18662, 19530, 19995, 20615, 21204, 22876, 23940, 23994, 24510, 24738, 25327, 26505, 26660, 27090, 27993, 28595, 29412, 34314, 35340, 36765, 37107, 37324, 39060, 39990, 41230, 46655, 47988, 49020, 49476, 50654, 51471, 53010, 54180, 55986, 57190, 59985, 61845, 68628, 73530, 74214, 75981, 79980, 82460, 83979, 85785, 93310, 101308, 102942, 106020, 111972, 114380, 119970, 123690, 126635, 139965, 147060, 148428, 151962, 167958, 171570, 177289, 185535, 186620, 205884, 227943, 239940, 247380, 253270, 257355, 279930, 303924, 335916, 343140, 354578, 371070, 379905, 419895, 455886, 506540, 514710, 531867, 559860, 709156, 742140, 759810, 839790, 886445, 911772, 1029420, 1063734, 1139715, 1519620, 1595601, 1679580, 1772890, 2127468, 2279430, 2659335, 3191202, 3545780, 4558860, 5318670, 6382404, 7978005, 10637340, 15956010, 31912020]

約数ペア:

[(1, 31912020), (2, 15956010), (3, 10637340), (4, 7978005), (5, 6382404), (6, 5318670), (7, 4558860), (9, 3545780), (10, 3191202), (12, 2659335), (14, 2279430), (15, 2127468), (18, 1772890), (19, 1679580), (20, 1595601), (21, 1519620), (28, 1139715), (30, 1063734), (31, 1029420), (35, 911772), (36, 886445), (38, 839790), (42, 759810), (43, 742140), (45, 709156), (57, 559860), (60, 531867), (62, 514710), (63, 506540), (70, 455886), (76, 419895), (84, 379905), (86, 371070), (90, 354578), (93, 343140), (95, 335916), (105, 303924), (114, 279930), (124, 257355), (126, 253270), (129, 247380), (133, 239940), (140, 227943), (155, 205884), (171, 186620), (172, 185535), (180, 177289), (186, 171570), (190, 167958), (210, 151962), (215, 148428), (217, 147060), (228, 139965), (252, 126635), (258, 123690), (266, 119970), (279, 114380), (285, 111972), (301, 106020), (310, 102942), (315, 101308), (342, 93310), (372, 85785), (380, 83979), (387, 82460), (399, 79980), (420, 75981), (430, 74214), (434, 73530), (465, 68628), (516, 61845), (532, 59985), (558, 57190), (570, 55986), (589, 54180), (602, 53010), (620, 51471), (630, 50654), (645, 49476), (651, 49020), (665, 47988), (684, 46655), (774, 41230), (798, 39990), (817, 39060), (855, 37324), (860, 37107), (868, 36765), (903, 35340), (930, 34314), (1085, 29412), (1116, 28595), (1140, 27993), (1178, 27090), (1197, 26660), (1204, 26505), (1260, 25327), (1290, 24738), (1302, 24510), (1330, 23994), (1333, 23940), (1395, 22876), (1505, 21204), (1548, 20615), (1596, 19995), (1634, 19530), (1710, 18662), (1767, 18060), (1806, 17670), (1860, 17157), (1935, 16492), (1953, 16340), (1995, 15996), (2170, 14706), (2356, 13545), (2394, 13330), (2451, 13020), (2580, 12369), (2604, 12255), (2660, 11997), (2666, 11970), (2709, 11780), (2790, 11438), (2945, 10836), (3010, 10602), (3255, 9804), (3268, 9765), (3420, 9331), (3534, 9030), (3612, 8835), (3870, 8246), (3906, 8170), (3990, 7998), (3999, 7980), (4085, 7812), (4123, 7740), (4340, 7353), (4515, 7068), (4788, 6665), (4902, 6510), (5301, 6020), (5332, 5985), (5418, 5890), (5580, 5719)]