21026885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13183}}^1$

素因数の和:13228

約数の個数: 16

約数和(自身を含む): 28477440

約数和(自身を除く): 7450555

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13183, 65915, 145013, 382307, 725065, 1911535, 4205377, 21026885]

約数ペア:

[(1, 21026885), (5, 4205377), (11, 1911535), (29, 725065), (55, 382307), (145, 145013), (319, 65915), (1595, 13183)]