12700040

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4019}}^1$

素因数の和:4109

約数の個数: 32

約数和(自身を含む): 28944000

約数和(自身を除く): 16243960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 4019, 8038, 16076, 20095, 32152, 40190, 80380, 160760, 317501, 635002, 1270004, 1587505, 2540008, 3175010, 6350020, 12700040]

約数ペア:

[(1, 12700040), (2, 6350020), (4, 3175010), (5, 2540008), (8, 1587505), (10, 1270004), (20, 635002), (40, 317501), (79, 160760), (158, 80380), (316, 40190), (395, 32152), (632, 20095), (790, 16076), (1580, 8038), (3160, 4019)]