131208640

素因数分解:

$2^6\times 5^1\times {\mathrm{521}}^1\times {\mathrm{787}}^1$

素因数の和:1325

約数の個数: 56

約数和(自身を含む): 313438032

約数和(自身を除く): 182229392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 521, 787, 1042, 1574, 2084, 2605, 3148, 3935, 4168, 5210, 6296, 7870, 8336, 10420, 12592, 15740, 16672, 20840, 25184, 31480, 33344, 41680, 50368, 62960, 83360, 125920, 166720, 251840, 410027, 820054, 1640108, 2050135, 3280216, 4100270, 6560432, 8200540, 13120864, 16401080, 26241728, 32802160, 65604320, 131208640]

約数ペア:

[(1, 131208640), (2, 65604320), (4, 32802160), (5, 26241728), (8, 16401080), (10, 13120864), (16, 8200540), (20, 6560432), (32, 4100270), (40, 3280216), (64, 2050135), (80, 1640108), (160, 820054), (320, 410027), (521, 251840), (787, 166720), (1042, 125920), (1574, 83360), (2084, 62960), (2605, 50368), (3148, 41680), (3935, 33344), (4168, 31480), (5210, 25184), (6296, 20840), (7870, 16672), (8336, 15740), (10420, 12592)]