128424920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246971}}^1$

素因数の和:246995

約数の個数: 32

約数和(自身を含む): 311184720

約数和(自身を除く): 182759800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 246971, 493942, 987884, 1234855, 1975768, 2469710, 3210623, 4939420, 6421246, 9878840, 12842492, 16053115, 25684984, 32106230, 64212460, 128424920]

約数ペア:

[(1, 128424920), (2, 64212460), (4, 32106230), (5, 25684984), (8, 16053115), (10, 12842492), (13, 9878840), (20, 6421246), (26, 4939420), (40, 3210623), (52, 2469710), (65, 1975768), (104, 1234855), (130, 987884), (260, 493942), (520, 246971)]