863380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{881}}^1$

素因数の和:904

約数の個数: 36

約数和(自身を含む): 2111508

約数和(自身を除く): 1248128

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 881, 980, 1762, 3524, 4405, 6167, 8810, 12334, 17620, 24668, 30835, 43169, 61670, 86338, 123340, 172676, 215845, 431690, 863380]

約数ペア:

[(1, 863380), (2, 431690), (4, 215845), (5, 172676), (7, 123340), (10, 86338), (14, 61670), (20, 43169), (28, 30835), (35, 24668), (49, 17620), (70, 12334), (98, 8810), (140, 6167), (196, 4405), (245, 3524), (490, 1762), (881, 980)]