21499833

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{1531}}^1$

素因数の和:1716

約数の個数: 16

約数和(自身を含む): 29806592

約数和(自身を除く): 8306759

約数列:

[1, 3, 31, 93, 151, 453, 1531, 4593, 4681, 14043, 47461, 142383, 231181, 693543, 7166611, 21499833]

約数ペア:

[(1, 21499833), (3, 7166611), (31, 693543), (93, 231181), (151, 142383), (453, 47461), (1531, 14043), (4593, 4681)]