21604778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{5503}}^1$

素因数の和:5669

約数の個数: 16

約数和(自身を含む): 35137536

約数和(自身を除く): 13532758

約数列:

[1, 2, 13, 26, 151, 302, 1963, 3926, 5503, 11006, 71539, 143078, 830953, 1661906, 10802389, 21604778]

約数ペア:

[(1, 21604778), (2, 10802389), (13, 1661906), (26, 830953), (151, 143078), (302, 71539), (1963, 11006), (3926, 5503)]