18910215

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{8941}}^1$

素因数の和:8999

約数の個数: 24

約数和(自身を含む): 33478848

約数和(自身を除く): 14568633

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 8941, 26823, 44705, 80469, 134115, 402345, 420227, 1260681, 2101135, 3782043, 6303405, 18910215]

約数ペア:

[(1, 18910215), (3, 6303405), (5, 3782043), (9, 2101135), (15, 1260681), (45, 420227), (47, 402345), (141, 134115), (235, 80469), (423, 44705), (705, 26823), (2115, 8941)]