254920360

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{80671}}^1$

素因数の和:80761

約数の個数: 32

約数和(自身を含む): 580838400

約数和(自身を除く): 325918040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 80671, 161342, 322684, 403355, 645368, 806710, 1613420, 3226840, 6373009, 12746018, 25492036, 31865045, 50984072, 63730090, 127460180, 254920360]

約数ペア:

[(1, 254920360), (2, 127460180), (4, 63730090), (5, 50984072), (8, 31865045), (10, 25492036), (20, 12746018), (40, 6373009), (79, 3226840), (158, 1613420), (316, 806710), (395, 645368), (632, 403355), (790, 322684), (1580, 161342), (3160, 80671)]