20858265

素因数分解:

$3^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1223}}^1$

素因数の和:1613

約数の個数: 24

約数和(自身を含む): 36279360

約数和(自身を除く): 15421095

約数列:

[1, 3, 5, 9, 15, 45, 379, 1137, 1223, 1895, 3411, 3669, 5685, 6115, 11007, 17055, 18345, 55035, 463517, 1390551, 2317585, 4171653, 6952755, 20858265]

約数ペア:

[(1, 20858265), (3, 6952755), (5, 4171653), (9, 2317585), (15, 1390551), (45, 463517), (379, 55035), (1137, 18345), (1223, 17055), (1895, 11007), (3411, 6115), (3669, 5685)]