20415690040

素因数分解:

$2^3\times 5^1\times {\mathrm{510392251}}^1$

素因数の和:510392262

約数の個数: 16

約数和(自身を含む): 45935302680

約数和(自身を除く): 25519612640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510392251, 1020784502, 2041569004, 2551961255, 4083138008, 5103922510, 10207845020, 20415690040]

約数ペア:

[(1, 20415690040), (2, 10207845020), (4, 5103922510), (5, 4083138008), (8, 2551961255), (10, 2041569004), (20, 1020784502), (40, 510392251)]