21645125

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{4027}}^1$

素因数の和:4085

約数の個数: 16

約数和(自身を含む): 27648192

約数和(自身を除く): 6003067

約数列:

[1, 5, 25, 43, 125, 215, 1075, 4027, 5375, 20135, 100675, 173161, 503375, 865805, 4329025, 21645125]

約数ペア:

[(1, 21645125), (5, 4329025), (25, 865805), (43, 503375), (125, 173161), (215, 100675), (1075, 20135), (4027, 5375)]