128957725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{947}}^1$

素因数の和:1389

約数の個数: 24

約数和(自身を含む): 172801440

約数和(自身を除く): 43843715

約数列:

[1, 5, 13, 25, 65, 325, 419, 947, 2095, 4735, 5447, 10475, 12311, 23675, 27235, 61555, 136175, 307775, 396793, 1983965, 5158309, 9919825, 25791545, 128957725]

約数ペア:

[(1, 128957725), (5, 25791545), (13, 9919825), (25, 5158309), (65, 1983965), (325, 396793), (419, 307775), (947, 136175), (2095, 61555), (4735, 27235), (5447, 23675), (10475, 12311)]