21813753

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{569}}^1\times {\mathrm{983}}^1$

素因数の和:1568

約数の個数: 16

約数和(自身を含む): 31409280

約数和(自身を除く): 9595527

約数列:

[1, 3, 13, 39, 569, 983, 1707, 2949, 7397, 12779, 22191, 38337, 559327, 1677981, 7271251, 21813753]

約数ペア:

[(1, 21813753), (3, 7271251), (13, 1677981), (39, 559327), (569, 38337), (983, 22191), (1707, 12779), (2949, 7397)]