128388730

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{797}}^1$

素因数の和:1074

約数の個数: 32

約数和(自身を含む): 235282320

約数和(自身を除く): 106893590

約数列:

[1, 2, 5, 10, 89, 178, 181, 362, 445, 797, 890, 905, 1594, 1810, 3985, 7970, 16109, 32218, 70933, 80545, 141866, 144257, 161090, 288514, 354665, 709330, 721285, 1442570, 12838873, 25677746, 64194365, 128388730]

約数ペア:

[(1, 128388730), (2, 64194365), (5, 25677746), (10, 12838873), (89, 1442570), (178, 721285), (181, 709330), (362, 354665), (445, 288514), (797, 161090), (890, 144257), (905, 141866), (1594, 80545), (1810, 70933), (3985, 32218), (7970, 16109)]