214928920

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{12763}}^1$

素因数の和:13195

約数の個数: 32

約数和(自身を含む): 484776720

約数和(自身を除く): 269847800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 12763, 16840, 25526, 51052, 63815, 102104, 127630, 255260, 510520, 5373223, 10746446, 21492892, 26866115, 42985784, 53732230, 107464460, 214928920]

約数ペア:

[(1, 214928920), (2, 107464460), (4, 53732230), (5, 42985784), (8, 26866115), (10, 21492892), (20, 10746446), (40, 5373223), (421, 510520), (842, 255260), (1684, 127630), (2105, 102104), (3368, 63815), (4210, 51052), (8420, 25526), (12763, 16840)]