66461875

素因数分解:

$5^4\times {\mathrm{43}}^1\times {\mathrm{2473}}^1$

素因数の和:2536

約数の個数: 20

約数和(自身を含む): 85016536

約数和(自身を除く): 18554661

約数列:

[1, 5, 25, 43, 125, 215, 625, 1075, 2473, 5375, 12365, 26875, 61825, 106339, 309125, 531695, 1545625, 2658475, 13292375, 66461875]

約数ペア:

[(1, 66461875), (5, 13292375), (25, 2658475), (43, 1545625), (125, 531695), (215, 309125), (625, 106339), (1075, 61825), (2473, 26875), (5375, 12365)]