870855140

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{195259}}^1$

素因数の和:195491

約数の個数: 24

約数和(自身を含む): 1837006080

約数和(自身を除く): 966150940

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 195259, 390518, 781036, 976295, 1952590, 3905180, 43542757, 87085514, 174171028, 217713785, 435427570, 870855140]

約数ペア:

[(1, 870855140), (2, 435427570), (4, 217713785), (5, 174171028), (10, 87085514), (20, 43542757), (223, 3905180), (446, 1952590), (892, 976295), (1115, 781036), (2230, 390518), (4460, 195259)]