1391980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{881}}^1$

素因数の和:969

約数の個数: 24

約数和(自身を含む): 2963520

約数和(自身を除く): 1571540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 881, 1580, 1762, 3524, 4405, 8810, 17620, 69599, 139198, 278396, 347995, 695990, 1391980]

約数ペア:

[(1, 1391980), (2, 695990), (4, 347995), (5, 278396), (10, 139198), (20, 69599), (79, 17620), (158, 8810), (316, 4405), (395, 3524), (790, 1762), (881, 1580)]