21628875

素因数分解:

$3^1\times 5^3\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:576

約数の個数: 32

約数和(自身を含む): 36339264

約数和(自身を除く): 14710389

約数列:

[1, 3, 5, 15, 25, 75, 125, 137, 375, 411, 421, 685, 1263, 2055, 2105, 3425, 6315, 10275, 10525, 17125, 31575, 51375, 52625, 57677, 157875, 173031, 288385, 865155, 1441925, 4325775, 7209625, 21628875]

約数ペア:

[(1, 21628875), (3, 7209625), (5, 4325775), (15, 1441925), (25, 865155), (75, 288385), (125, 173031), (137, 157875), (375, 57677), (411, 52625), (421, 51375), (685, 31575), (1263, 17125), (2055, 10525), (2105, 10275), (3425, 6315)]