20021495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18119}}^1$

素因数の和:18154

約数の個数: 16

約数和(自身を含む): 27397440

約数和(自身を除く): 7375945

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18119, 90595, 235547, 308023, 1177735, 1540115, 4004299, 20021495]

約数ペア:

[(1, 20021495), (5, 4004299), (13, 1540115), (17, 1177735), (65, 308023), (85, 235547), (221, 90595), (1105, 18119)]