18700440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:513

約数の個数: 128

約数和(自身を含む): 63313920

約数和(自身を除く): 44613480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 124, 132, 155, 165, 186, 220, 248, 264, 310, 330, 341, 372, 440, 457, 465, 620, 660, 682, 744, 914, 930, 1023, 1240, 1320, 1364, 1371, 1705, 1828, 1860, 2046, 2285, 2728, 2742, 3410, 3656, 3720, 4092, 4570, 5027, 5115, 5484, 6820, 6855, 8184, 9140, 10054, 10230, 10968, 13640, 13710, 14167, 15081, 18280, 20108, 20460, 25135, 27420, 28334, 30162, 40216, 40920, 42501, 50270, 54840, 56668, 60324, 70835, 75405, 85002, 100540, 113336, 120648, 141670, 150810, 155837, 170004, 201080, 212505, 283340, 301620, 311674, 340008, 425010, 467511, 566680, 603240, 623348, 779185, 850020, 935022, 1246696, 1558370, 1700040, 1870044, 2337555, 3116740, 3740088, 4675110, 6233480, 9350220, 18700440]

約数ペア:

[(1, 18700440), (2, 9350220), (3, 6233480), (4, 4675110), (5, 3740088), (6, 3116740), (8, 2337555), (10, 1870044), (11, 1700040), (12, 1558370), (15, 1246696), (20, 935022), (22, 850020), (24, 779185), (30, 623348), (31, 603240), (33, 566680), (40, 467511), (44, 425010), (55, 340008), (60, 311674), (62, 301620), (66, 283340), (88, 212505), (93, 201080), (110, 170004), (120, 155837), (124, 150810), (132, 141670), (155, 120648), (165, 113336), (186, 100540), (220, 85002), (248, 75405), (264, 70835), (310, 60324), (330, 56668), (341, 54840), (372, 50270), (440, 42501), (457, 40920), (465, 40216), (620, 30162), (660, 28334), (682, 27420), (744, 25135), (914, 20460), (930, 20108), (1023, 18280), (1240, 15081), (1320, 14167), (1364, 13710), (1371, 13640), (1705, 10968), (1828, 10230), (1860, 10054), (2046, 9140), (2285, 8184), (2728, 6855), (2742, 6820), (3410, 5484), (3656, 5115), (3720, 5027), (4092, 4570)]