291289640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{3851}}^1$

素因数の和:3954

約数の個数: 64

約数和(自身を含む): 687813120

約数和(自身を除く): 396523480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 488, 610, 620, 1220, 1240, 1891, 2440, 3782, 3851, 7564, 7702, 9455, 15128, 15404, 18910, 19255, 30808, 37820, 38510, 75640, 77020, 119381, 154040, 234911, 238762, 469822, 477524, 596905, 939644, 955048, 1174555, 1193810, 1879288, 2349110, 2387620, 4698220, 4775240, 7282241, 9396440, 14564482, 29128964, 36411205, 58257928, 72822410, 145644820, 291289640]

約数ペア:

[(1, 291289640), (2, 145644820), (4, 72822410), (5, 58257928), (8, 36411205), (10, 29128964), (20, 14564482), (31, 9396440), (40, 7282241), (61, 4775240), (62, 4698220), (122, 2387620), (124, 2349110), (155, 1879288), (244, 1193810), (248, 1174555), (305, 955048), (310, 939644), (488, 596905), (610, 477524), (620, 469822), (1220, 238762), (1240, 234911), (1891, 154040), (2440, 119381), (3782, 77020), (3851, 75640), (7564, 38510), (7702, 37820), (9455, 30808), (15128, 19255), (15404, 18910)]