21354160

素因数分解:

$2^4\times 5^1\times {\mathrm{266927}}^1$

素因数の和:266940

約数の個数: 20

約数和(自身を含む): 49648608

約数和(自身を除く): 28294448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 266927, 533854, 1067708, 1334635, 2135416, 2669270, 4270832, 5338540, 10677080, 21354160]

約数ペア:

[(1, 21354160), (2, 10677080), (4, 5338540), (5, 4270832), (8, 2669270), (10, 2135416), (16, 1334635), (20, 1067708), (40, 533854), (80, 266927)]