20199641875

素因数分解:

$5^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{159209}}^1$

素因数の和:159265

約数の個数: 40

約数和(自身を含む): 29842322400

約数和(自身を除く): 9642680525

約数列:

[1, 5, 7, 25, 29, 35, 125, 145, 175, 203, 625, 725, 875, 1015, 3625, 4375, 5075, 18125, 25375, 126875, 159209, 796045, 1114463, 3980225, 4617061, 5572315, 19901125, 23085305, 27861575, 32319427, 99505625, 115426525, 139307875, 161597135, 577132625, 696539375, 807985675, 2885663125, 4039928375, 20199641875]

約数ペア:

[(1, 20199641875), (5, 4039928375), (7, 2885663125), (25, 807985675), (29, 696539375), (35, 577132625), (125, 161597135), (145, 139307875), (175, 115426525), (203, 99505625), (625, 32319427), (725, 27861575), (875, 23085305), (1015, 19901125), (3625, 5572315), (4375, 4617061), (5075, 3980225), (18125, 1114463), (25375, 796045), (126875, 159209)]