131931020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{911}}^1$

素因数の和:1490

約数の個数: 48

約数和(自身を含む): 299230848

約数和(自身を除く): 167299828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 557, 911, 1114, 1822, 2228, 2785, 3644, 4555, 5570, 7241, 9110, 11140, 11843, 14482, 18220, 23686, 28964, 36205, 47372, 59215, 72410, 118430, 144820, 236860, 507427, 1014854, 2029708, 2537135, 5074270, 6596551, 10148540, 13193102, 26386204, 32982755, 65965510, 131931020]

約数ペア:

[(1, 131931020), (2, 65965510), (4, 32982755), (5, 26386204), (10, 13193102), (13, 10148540), (20, 6596551), (26, 5074270), (52, 2537135), (65, 2029708), (130, 1014854), (260, 507427), (557, 236860), (911, 144820), (1114, 118430), (1822, 72410), (2228, 59215), (2785, 47372), (3644, 36205), (4555, 28964), (5570, 23686), (7241, 18220), (9110, 14482), (11140, 11843)]