20127640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38707}}^1$

素因数の和:38731

約数の個数: 32

約数和(自身を含む): 48772080

約数和(自身を除く): 28644440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38707, 77414, 154828, 193535, 309656, 387070, 503191, 774140, 1006382, 1548280, 2012764, 2515955, 4025528, 5031910, 10063820, 20127640]

約数ペア:

[(1, 20127640), (2, 10063820), (4, 5031910), (5, 4025528), (8, 2515955), (10, 2012764), (13, 1548280), (20, 1006382), (26, 774140), (40, 503191), (52, 387070), (65, 309656), (104, 193535), (130, 154828), (260, 77414), (520, 38707)]