18078275

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 23373504

約数和(自身を除く): 5295229

約数列:

[1, 5, 25, 43, 67, 215, 251, 335, 1075, 1255, 1675, 2881, 6275, 10793, 14405, 16817, 53965, 72025, 84085, 269825, 420425, 723131, 3615655, 18078275]

約数ペア:

[(1, 18078275), (5, 3615655), (25, 723131), (43, 420425), (67, 269825), (215, 84085), (251, 72025), (335, 53965), (1075, 16817), (1255, 14405), (1675, 10793), (2881, 6275)]