19879375

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{1871}}^1$

素因数の和:1908

約数の個数: 20

約数和(自身を含む): 26316576

約数和(自身を除く): 6437201

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 1871, 2125, 9355, 10625, 31807, 46775, 159035, 233875, 795175, 1169375, 3975875, 19879375]

約数ペア:

[(1, 19879375), (5, 3975875), (17, 1169375), (25, 795175), (85, 233875), (125, 159035), (425, 46775), (625, 31807), (1871, 10625), (2125, 9355)]