20157675

素因数分解:

$3^1\times 5^2\times {\mathrm{397}}^1\times {\mathrm{677}}^1$

素因数の和:1087

約数の個数: 24

約数和(自身を含む): 33460656

約数和(自身を除く): 13302981

約数列:

[1, 3, 5, 15, 25, 75, 397, 677, 1191, 1985, 2031, 3385, 5955, 9925, 10155, 16925, 29775, 50775, 268769, 806307, 1343845, 4031535, 6719225, 20157675]

約数ペア:

[(1, 20157675), (3, 6719225), (5, 4031535), (15, 1343845), (25, 806307), (75, 268769), (397, 50775), (677, 29775), (1191, 16925), (1985, 10155), (2031, 9925), (3385, 5955)]