18240475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3491}}^1$

素因数の和:3531

約数の個数: 24

約数和(自身を含む): 25980480

約数和(自身を除く): 7740005

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 3491, 5225, 17455, 38401, 66329, 87275, 192005, 331645, 729619, 960025, 1658225, 3648095, 18240475]

約数ペア:

[(1, 18240475), (5, 3648095), (11, 1658225), (19, 960025), (25, 729619), (55, 331645), (95, 192005), (209, 87275), (275, 66329), (475, 38401), (1045, 17455), (3491, 5225)]