28139940

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 92628480

約数和(自身を除く): 64488540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 41, 45, 54, 60, 62, 82, 90, 93, 108, 123, 124, 135, 155, 164, 180, 186, 205, 246, 270, 279, 310, 369, 372, 410, 465, 492, 540, 558, 615, 620, 738, 820, 837, 930, 1107, 1116, 1230, 1271, 1395, 1476, 1674, 1681, 1845, 1860, 2214, 2460, 2542, 2790, 3348, 3362, 3690, 3813, 4185, 4428, 5043, 5084, 5535, 5580, 6355, 6724, 7380, 7626, 8370, 8405, 10086, 11070, 11439, 12710, 15129, 15252, 16740, 16810, 19065, 20172, 22140, 22878, 25215, 25420, 30258, 33620, 34317, 38130, 45387, 45756, 50430, 52111, 57195, 60516, 68634, 75645, 76260, 90774, 100860, 104222, 114390, 137268, 151290, 156333, 171585, 181548, 208444, 226935, 228780, 260555, 302580, 312666, 343170, 453870, 468999, 521110, 625332, 686340, 781665, 907740, 937998, 1042220, 1406997, 1563330, 1875996, 2344995, 2813994, 3126660, 4689990, 5627988, 7034985, 9379980, 14069970, 28139940]

約数ペア:

[(1, 28139940), (2, 14069970), (3, 9379980), (4, 7034985), (5, 5627988), (6, 4689990), (9, 3126660), (10, 2813994), (12, 2344995), (15, 1875996), (18, 1563330), (20, 1406997), (27, 1042220), (30, 937998), (31, 907740), (36, 781665), (41, 686340), (45, 625332), (54, 521110), (60, 468999), (62, 453870), (82, 343170), (90, 312666), (93, 302580), (108, 260555), (123, 228780), (124, 226935), (135, 208444), (155, 181548), (164, 171585), (180, 156333), (186, 151290), (205, 137268), (246, 114390), (270, 104222), (279, 100860), (310, 90774), (369, 76260), (372, 75645), (410, 68634), (465, 60516), (492, 57195), (540, 52111), (558, 50430), (615, 45756), (620, 45387), (738, 38130), (820, 34317), (837, 33620), (930, 30258), (1107, 25420), (1116, 25215), (1230, 22878), (1271, 22140), (1395, 20172), (1476, 19065), (1674, 16810), (1681, 16740), (1845, 15252), (1860, 15129), (2214, 12710), (2460, 11439), (2542, 11070), (2790, 10086), (3348, 8405), (3362, 8370), (3690, 7626), (3813, 7380), (4185, 6724), (4428, 6355), (5043, 5580), (5084, 5535)]