21263518

素因数分解:

$2^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:723

約数の個数: 16

約数和(自身を含む): 32366880

約数和(自身を除く): 11103362

約数列:

[1, 2, 151, 181, 302, 362, 389, 778, 27331, 54662, 58739, 70409, 117478, 140818, 10631759, 21263518]

約数ペア:

[(1, 21263518), (2, 10631759), (151, 140818), (181, 117478), (302, 70409), (362, 58739), (389, 54662), (778, 27331)]