18857975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^2$

素因数の和:132

約数の個数: 36

約数和(自身を含む): 26170200

約数和(自身を除く): 7312225

約数列:

[1, 5, 19, 25, 29, 37, 95, 145, 185, 475, 551, 703, 725, 925, 1073, 1369, 2755, 3515, 5365, 6845, 13775, 17575, 20387, 26011, 26825, 34225, 39701, 101935, 130055, 198505, 509675, 650275, 754319, 992525, 3771595, 18857975]

約数ペア:

[(1, 18857975), (5, 3771595), (19, 992525), (25, 754319), (29, 650275), (37, 509675), (95, 198505), (145, 130055), (185, 101935), (475, 39701), (551, 34225), (703, 26825), (725, 26011), (925, 20387), (1073, 17575), (1369, 13775), (2755, 6845), (3515, 5365)]