21381902

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1\times {\mathrm{701}}^1$

素因数の和:955

約数の個数: 16

約数和(自身を含む): 32651424

約数和(自身を除く): 11269522

約数列:

[1, 2, 101, 151, 202, 302, 701, 1402, 15251, 30502, 70801, 105851, 141602, 211702, 10690951, 21381902]

約数ペア:

[(1, 21381902), (2, 10690951), (101, 211702), (151, 141602), (202, 105851), (302, 70801), (701, 30502), (1402, 15251)]