718640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1$

素因数の和:717

約数の個数: 40

約数和(自身を含む): 1801968

約数和(自身を除く): 1083328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 691, 1040, 1382, 2764, 3455, 5528, 6910, 8983, 11056, 13820, 17966, 27640, 35932, 44915, 55280, 71864, 89830, 143728, 179660, 359320, 718640]

約数ペア:

[(1, 718640), (2, 359320), (4, 179660), (5, 143728), (8, 89830), (10, 71864), (13, 55280), (16, 44915), (20, 35932), (26, 27640), (40, 17966), (52, 13820), (65, 11056), (80, 8983), (104, 6910), (130, 5528), (208, 3455), (260, 2764), (520, 1382), (691, 1040)]