21515125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{9059}}^1$

素因数の和:9093

約数の個数: 16

約数和(自身を含む): 28267200

約数和(自身を除く): 6752075

約数列:

[1, 5, 19, 25, 95, 125, 475, 2375, 9059, 45295, 172121, 226475, 860605, 1132375, 4303025, 21515125]

約数ペア:

[(1, 21515125), (5, 4303025), (19, 1132375), (25, 860605), (95, 226475), (125, 172121), (475, 45295), (2375, 9059)]