18390975

素因数分解:

$3^1\times 5^2\times {\mathrm{379}}^1\times {\mathrm{647}}^1$

素因数の和:1039

約数の個数: 24

約数和(自身を含む): 30533760

約数和(自身を除く): 12142785

約数列:

[1, 3, 5, 15, 25, 75, 379, 647, 1137, 1895, 1941, 3235, 5685, 9475, 9705, 16175, 28425, 48525, 245213, 735639, 1226065, 3678195, 6130325, 18390975]

約数ペア:

[(1, 18390975), (3, 6130325), (5, 3678195), (15, 1226065), (25, 735639), (75, 245213), (379, 48525), (647, 28425), (1137, 16175), (1895, 9705), (1941, 9475), (3235, 5685)]