19645625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:123

約数の個数: 30

約数和(自身を含む): 26611794

約数和(自身を除く): 6966169

約数列:

[1, 5, 17, 25, 43, 85, 125, 215, 425, 625, 731, 1075, 1849, 2125, 3655, 5375, 9245, 10625, 18275, 26875, 31433, 46225, 91375, 157165, 231125, 456875, 785825, 1155625, 3929125, 19645625]

約数ペア:

[(1, 19645625), (5, 3929125), (17, 1155625), (25, 785825), (43, 456875), (85, 231125), (125, 157165), (215, 91375), (425, 46225), (625, 31433), (731, 26875), (1075, 18275), (1849, 10625), (2125, 9245), (3655, 5375)]