21804110

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24499}}^1$

素因数の和:24595

約数の個数: 16

約数和(自身を含む): 39690000

約数和(自身を除く): 17885890

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 24499, 48998, 122495, 244990, 2180411, 4360822, 10902055, 21804110]

約数ペア:

[(1, 21804110), (2, 10902055), (5, 4360822), (10, 2180411), (89, 244990), (178, 122495), (445, 48998), (890, 24499)]