20282680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1487}}^1$

素因数の和:1540

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 31142600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1487, 1705, 2728, 2974, 3410, 5948, 6820, 7435, 11896, 13640, 14870, 16357, 29740, 32714, 46097, 59480, 65428, 81785, 92194, 130856, 163570, 184388, 230485, 327140, 368776, 460970, 507067, 654280, 921940, 1014134, 1843880, 2028268, 2535335, 4056536, 5070670, 10141340, 20282680]

約数ペア:

[(1, 20282680), (2, 10141340), (4, 5070670), (5, 4056536), (8, 2535335), (10, 2028268), (11, 1843880), (20, 1014134), (22, 921940), (31, 654280), (40, 507067), (44, 460970), (55, 368776), (62, 327140), (88, 230485), (110, 184388), (124, 163570), (155, 130856), (220, 92194), (248, 81785), (310, 65428), (341, 59480), (440, 46097), (620, 32714), (682, 29740), (1240, 16357), (1364, 14870), (1487, 13640), (1705, 11896), (2728, 7435), (2974, 6820), (3410, 5948)]