16556875

素因数分解:

$5^4\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:528

約数の個数: 20

約数和(自身を含む): 21087000

約数和(自身を除く): 4530125

約数列:

[1, 5, 25, 59, 125, 295, 449, 625, 1475, 2245, 7375, 11225, 26491, 36875, 56125, 132455, 280625, 662275, 3311375, 16556875]

約数ペア:

[(1, 16556875), (5, 3311375), (25, 662275), (59, 280625), (125, 132455), (295, 56125), (449, 36875), (625, 26491), (1475, 11225), (2245, 7375)]