21815431

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^3\times {\mathrm{163}}^1$

素因数の和:243

約数の個数: 16

約数和(自身を含む): 25032960

約数和(自身を除く): 3217529

約数列:

[1, 11, 23, 163, 253, 529, 1793, 3749, 5819, 12167, 41239, 86227, 133837, 948497, 1983221, 21815431]

約数ペア:

[(1, 21815431), (11, 1983221), (23, 948497), (163, 133837), (253, 86227), (529, 41239), (1793, 12167), (3749, 5819)]