18326815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 24837120

約数和(自身を除く): 6510305

約数列:

[1, 5, 13, 43, 65, 79, 83, 215, 395, 415, 559, 1027, 1079, 2795, 3397, 3569, 5135, 5395, 6557, 16985, 17845, 32785, 44161, 46397, 85241, 220805, 231985, 281951, 426205, 1409755, 3665363, 18326815]

約数ペア:

[(1, 18326815), (5, 3665363), (13, 1409755), (43, 426205), (65, 281951), (79, 231985), (83, 220805), (215, 85241), (395, 46397), (415, 44161), (559, 32785), (1027, 17845), (1079, 16985), (2795, 6557), (3397, 5395), (3569, 5135)]