21311025

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{4241}}^1$

素因数の和:4321

約数の個数: 24

約数和(自身を含む): 35768544

約数和(自身を除く): 14457519

約数列:

[1, 3, 5, 15, 25, 67, 75, 201, 335, 1005, 1675, 4241, 5025, 12723, 21205, 63615, 106025, 284147, 318075, 852441, 1420735, 4262205, 7103675, 21311025]

約数ペア:

[(1, 21311025), (3, 7103675), (5, 4262205), (15, 1420735), (25, 852441), (67, 318075), (75, 284147), (201, 106025), (335, 63615), (1005, 21205), (1675, 12723), (4241, 5025)]