212138680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{407959}}^1$

素因数の和:407983

約数の個数: 32

約数和(自身を含む): 514029600

約数和(自身を除く): 301890920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 407959, 815918, 1631836, 2039795, 3263672, 4079590, 5303467, 8159180, 10606934, 16318360, 21213868, 26517335, 42427736, 53034670, 106069340, 212138680]

約数ペア:

[(1, 212138680), (2, 106069340), (4, 53034670), (5, 42427736), (8, 26517335), (10, 21213868), (13, 16318360), (20, 10606934), (26, 8159180), (40, 5303467), (52, 4079590), (65, 3263672), (104, 2039795), (130, 1631836), (260, 815918), (520, 407959)]