18918675

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1789}}^1$

素因数の和:1852

約数の個数: 36

約数和(自身を含む): 34625760

約数和(自身を除く): 15707085

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 141, 225, 235, 423, 705, 1175, 1789, 2115, 3525, 5367, 8945, 10575, 16101, 26835, 44725, 80505, 84083, 134175, 252249, 402525, 420415, 756747, 1261245, 2102075, 3783735, 6306225, 18918675]

約数ペア:

[(1, 18918675), (3, 6306225), (5, 3783735), (9, 2102075), (15, 1261245), (25, 756747), (45, 420415), (47, 402525), (75, 252249), (141, 134175), (225, 84083), (235, 80505), (423, 44725), (705, 26835), (1175, 16101), (1789, 10575), (2115, 8945), (3525, 5367)]