17945125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 25279488

約数和(自身を除く): 7334363

約数列:

[1, 5, 11, 25, 31, 55, 125, 155, 275, 341, 421, 775, 1375, 1705, 2105, 3875, 4631, 8525, 10525, 13051, 23155, 42625, 52625, 65255, 115775, 143561, 326275, 578875, 717805, 1631375, 3589025, 17945125]

約数ペア:

[(1, 17945125), (5, 3589025), (11, 1631375), (25, 717805), (31, 578875), (55, 326275), (125, 143561), (155, 115775), (275, 65255), (341, 52625), (421, 42625), (775, 23155), (1375, 13051), (1705, 10525), (2105, 8525), (3875, 4631)]