20655265

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4177}}^1$

素因数の和:4248

約数の個数: 16

約数和(自身を含む): 26471808

約数和(自身を除く): 5816543

約数列:

[1, 5, 23, 43, 115, 215, 989, 4177, 4945, 20885, 96071, 179611, 480355, 898055, 4131053, 20655265]

約数ペア:

[(1, 20655265), (5, 4131053), (23, 898055), (43, 480355), (115, 179611), (215, 96071), (989, 20885), (4177, 4945)]