21388657507

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{1367}}^1\times {\mathrm{21701}}^1$

素因数の和:23178

約数の個数: 16

約数和(自身を含む): 24700695552

約数和(自身を除く): 3312038045

約数列:

[1, 7, 103, 721, 1367, 9569, 21701, 140801, 151907, 985607, 2235203, 15646421, 29665267, 207656869, 3055522501, 21388657507]

約数ペア:

[(1, 21388657507), (7, 3055522501), (103, 207656869), (721, 29665267), (1367, 15646421), (9569, 2235203), (21701, 985607), (140801, 151907)]