21488675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1787}}^1$

素因数の和:1847

約数の個数: 24

約数和(自身を含む): 29487696

約数和(自身を除く): 7999021

約数列:

[1, 5, 13, 25, 37, 65, 185, 325, 481, 925, 1787, 2405, 8935, 12025, 23231, 44675, 66119, 116155, 330595, 580775, 859547, 1652975, 4297735, 21488675]

約数ペア:

[(1, 21488675), (5, 4297735), (13, 1652975), (25, 859547), (37, 580775), (65, 330595), (185, 116155), (325, 66119), (481, 44675), (925, 23231), (1787, 12025), (2405, 8935)]