1295271640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2490907}}^1$

素因数の和:2490931

約数の個数: 32

約数和(自身を含む): 3138544080

約数和(自身を除く): 1843272440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2490907, 4981814, 9963628, 12454535, 19927256, 24909070, 32381791, 49818140, 64763582, 99636280, 129527164, 161908955, 259054328, 323817910, 647635820, 1295271640]

約数ペア:

[(1, 1295271640), (2, 647635820), (4, 323817910), (5, 259054328), (8, 161908955), (10, 129527164), (13, 99636280), (20, 64763582), (26, 49818140), (40, 32381791), (52, 24909070), (65, 19927256), (104, 12454535), (130, 9963628), (260, 4981814), (520, 2490907)]