21599825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1621}}^1$

素因数の和:1685

約数の個数: 24

約数和(自身を含む): 29565816

約数和(自身を除く): 7965991

約数列:

[1, 5, 13, 25, 41, 65, 205, 325, 533, 1025, 1621, 2665, 8105, 13325, 21073, 40525, 66461, 105365, 332305, 526825, 863993, 1661525, 4319965, 21599825]

約数ペア:

[(1, 21599825), (5, 4319965), (13, 1661525), (25, 863993), (41, 526825), (65, 332305), (205, 105365), (325, 66461), (533, 40525), (1025, 21073), (1621, 13325), (2665, 8105)]