30981875

素因数分解:

$5^4\times {\mathrm{19}}^1\times {\mathrm{2609}}^1$

素因数の和:2648

約数の個数: 20

約数和(自身を含む): 40768200

約数和(自身を除く): 9786325

約数列:

[1, 5, 19, 25, 95, 125, 475, 625, 2375, 2609, 11875, 13045, 49571, 65225, 247855, 326125, 1239275, 1630625, 6196375, 30981875]

約数ペア:

[(1, 30981875), (5, 6196375), (19, 1630625), (25, 1239275), (95, 326125), (125, 247855), (475, 65225), (625, 49571), (2375, 13045), (2609, 11875)]