1728678420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{44257}}^1$

素因数の和:44310

約数の個数: 144

約数和(自身を含む): 6186206208

約数和(自身を除く): 4457527788

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 558, 620, 630, 651, 868, 930, 1085, 1116, 1260, 1302, 1395, 1860, 1953, 2170, 2604, 2790, 3255, 3906, 4340, 5580, 6510, 7812, 9765, 13020, 19530, 39060, 44257, 88514, 132771, 177028, 221285, 265542, 309799, 398313, 442570, 531084, 619598, 663855, 796626, 885140, 929397, 1239196, 1327710, 1371967, 1548995, 1593252, 1858794, 1991565, 2655420, 2743934, 2788191, 3097990, 3717588, 3983130, 4115901, 4646985, 5487868, 5576382, 6195980, 6859835, 7966260, 8231802, 9293970, 9603769, 11152764, 12347703, 13719670, 13940955, 16463604, 18587940, 19207538, 20579505, 24695406, 27439340, 27881910, 28811307, 38415076, 41159010, 48018845, 49390812, 55763820, 57622614, 61738515, 82318020, 86433921, 96037690, 115245228, 123477030, 144056535, 172867842, 192075380, 246954060, 288113070, 345735684, 432169605, 576226140, 864339210, 1728678420]

約数ペア:

[(1, 1728678420), (2, 864339210), (3, 576226140), (4, 432169605), (5, 345735684), (6, 288113070), (7, 246954060), (9, 192075380), (10, 172867842), (12, 144056535), (14, 123477030), (15, 115245228), (18, 96037690), (20, 86433921), (21, 82318020), (28, 61738515), (30, 57622614), (31, 55763820), (35, 49390812), (36, 48018845), (42, 41159010), (45, 38415076), (60, 28811307), (62, 27881910), (63, 27439340), (70, 24695406), (84, 20579505), (90, 19207538), (93, 18587940), (105, 16463604), (124, 13940955), (126, 13719670), (140, 12347703), (155, 11152764), (180, 9603769), (186, 9293970), (210, 8231802), (217, 7966260), (252, 6859835), (279, 6195980), (310, 5576382), (315, 5487868), (372, 4646985), (420, 4115901), (434, 3983130), (465, 3717588), (558, 3097990), (620, 2788191), (630, 2743934), (651, 2655420), (868, 1991565), (930, 1858794), (1085, 1593252), (1116, 1548995), (1260, 1371967), (1302, 1327710), (1395, 1239196), (1860, 929397), (1953, 885140), (2170, 796626), (2604, 663855), (2790, 619598), (3255, 531084), (3906, 442570), (4340, 398313), (5580, 309799), (6510, 265542), (7812, 221285), (9765, 177028), (13020, 132771), (19530, 88514), (39060, 44257)]