1220764375

素因数分解:

$5^4\times {\mathrm{1237}}^1\times {\mathrm{1579}}^1$

素因数の和:2836

約数の個数: 20

約数和(自身を含む): 1527667240

約数和(自身を除く): 306902865

約数列:

[1, 5, 25, 125, 625, 1237, 1579, 6185, 7895, 30925, 39475, 154625, 197375, 773125, 986875, 1953223, 9766115, 48830575, 244152875, 1220764375]

約数ペア:

[(1, 1220764375), (5, 244152875), (25, 48830575), (125, 9766115), (625, 1953223), (1237, 986875), (1579, 773125), (6185, 197375), (7895, 154625), (30925, 39475)]