1991575

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:147

約数の個数: 24

約数和(自身を含む): 2656080

約数和(自身を除く): 664505

約数列:

[1, 5, 25, 29, 41, 67, 145, 205, 335, 725, 1025, 1189, 1675, 1943, 2747, 5945, 9715, 13735, 29725, 48575, 68675, 79663, 398315, 1991575]

約数ペア:

[(1, 1991575), (5, 398315), (25, 79663), (29, 68675), (41, 48575), (67, 29725), (145, 13735), (205, 9715), (335, 5945), (725, 2747), (1025, 1943), (1189, 1675)]