211027640

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{12899}}^1$

素因数の和:13319

約数の個数: 32

約数和(自身を含む): 476010000

約数和(自身を除く): 264982360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 12899, 16360, 25798, 51596, 64495, 103192, 128990, 257980, 515960, 5275691, 10551382, 21102764, 26378455, 42205528, 52756910, 105513820, 211027640]

約数ペア:

[(1, 211027640), (2, 105513820), (4, 52756910), (5, 42205528), (8, 26378455), (10, 21102764), (20, 10551382), (40, 5275691), (409, 515960), (818, 257980), (1636, 128990), (2045, 103192), (3272, 64495), (4090, 51596), (8180, 25798), (12899, 16360)]