20158775

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8861}}^1$

素因数の和:8891

約数の個数: 24

約数和(自身を含む): 30768864

約数和(自身を除く): 10610089

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 8861, 44305, 62027, 115193, 221525, 310135, 575965, 806351, 1550675, 2879825, 4031755, 20158775]

約数ペア:

[(1, 20158775), (5, 4031755), (7, 2879825), (13, 1550675), (25, 806351), (35, 575965), (65, 310135), (91, 221525), (175, 115193), (325, 62027), (455, 44305), (2275, 8861)]