21901004

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{739}}^1$

素因数の和:1013

約数の個数: 24

約数和(自身を含む): 39782400

約数和(自身を除く): 17881396

約数列:

[1, 2, 4, 31, 62, 124, 239, 478, 739, 956, 1478, 2956, 7409, 14818, 22909, 29636, 45818, 91636, 176621, 353242, 706484, 5475251, 10950502, 21901004]

約数ペア:

[(1, 21901004), (2, 10950502), (4, 5475251), (31, 706484), (62, 353242), (124, 176621), (239, 91636), (478, 45818), (739, 29636), (956, 22909), (1478, 14818), (2956, 7409)]