2181220

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{571}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 4612608

約数和(自身を除く): 2431388

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 571, 764, 955, 1142, 1910, 2284, 2855, 3820, 5710, 11420, 109061, 218122, 436244, 545305, 1090610, 2181220]

約数ペア:

[(1, 2181220), (2, 1090610), (4, 545305), (5, 436244), (10, 218122), (20, 109061), (191, 11420), (382, 5710), (571, 3820), (764, 2855), (955, 2284), (1142, 1910)]