291442160

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{117517}}^1$

素因数の和:117561

約数の個数: 40

約数和(自身を含む): 699467136

約数和(自身を除く): 408024976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 117517, 235034, 470068, 587585, 940136, 1175170, 1880272, 2350340, 3643027, 4700680, 7286054, 9401360, 14572108, 18215135, 29144216, 36430270, 58288432, 72860540, 145721080, 291442160]

約数ペア:

[(1, 291442160), (2, 145721080), (4, 72860540), (5, 58288432), (8, 36430270), (10, 29144216), (16, 18215135), (20, 14572108), (31, 9401360), (40, 7286054), (62, 4700680), (80, 3643027), (124, 2350340), (155, 1880272), (248, 1175170), (310, 940136), (496, 587585), (620, 470068), (1240, 235034), (2480, 117517)]