19665405

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10163}}^1$

素因数の和:10217

約数の個数: 24

約数和(自身を含む): 34882848

約数和(自身を除く): 15217443

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10163, 30489, 50815, 91467, 152445, 437009, 457335, 1311027, 2185045, 3933081, 6555135, 19665405]

約数ペア:

[(1, 19665405), (3, 6555135), (5, 3933081), (9, 2185045), (15, 1311027), (43, 457335), (45, 437009), (129, 152445), (215, 91467), (387, 50815), (645, 30489), (1935, 10163)]