128710225

素因数分解:

$5^2\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1747}}^1$

素因数の和:2185

約数の個数: 24

約数和(自身を含む): 182938688

約数和(自身を除く): 54228463

約数列:

[1, 5, 7, 25, 35, 175, 421, 1747, 2105, 2947, 8735, 10525, 12229, 14735, 43675, 61145, 73675, 305725, 735487, 3677435, 5148409, 18387175, 25742045, 128710225]

約数ペア:

[(1, 128710225), (5, 25742045), (7, 18387175), (25, 5148409), (35, 3677435), (175, 735487), (421, 305725), (1747, 73675), (2105, 61145), (2947, 43675), (8735, 14735), (10525, 12229)]