201651875

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{18979}}^1$

素因数の和:19016

約数の個数: 20

約数和(自身を含む): 266820840

約数和(自身を除く): 65168965

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 2125, 10625, 18979, 94895, 322643, 474475, 1613215, 2372375, 8066075, 11861875, 40330375, 201651875]

約数ペア:

[(1, 201651875), (5, 40330375), (17, 11861875), (25, 8066075), (85, 2372375), (125, 1613215), (425, 474475), (625, 322643), (2125, 94895), (10625, 18979)]