18876225

素因数分解:

$3^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{647}}^1$

素因数の和:1049

約数の個数: 24

約数和(自身を含む): 31337280

約数和(自身を除く): 12461055

約数列:

[1, 3, 5, 15, 25, 75, 389, 647, 1167, 1941, 1945, 3235, 5835, 9705, 9725, 16175, 29175, 48525, 251683, 755049, 1258415, 3775245, 6292075, 18876225]

約数ペア:

[(1, 18876225), (3, 6292075), (5, 3775245), (15, 1258415), (25, 755049), (75, 251683), (389, 48525), (647, 29175), (1167, 16175), (1941, 9725), (1945, 9705), (3235, 5835)]