18200020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11519}}^1$

素因数の和:11607

約数の個数: 24

約数和(自身を含む): 38707200

約数和(自身を除く): 20507180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11519, 23038, 46076, 57595, 115190, 230380, 910001, 1820002, 3640004, 4550005, 9100010, 18200020]

約数ペア:

[(1, 18200020), (2, 9100010), (4, 4550005), (5, 3640004), (10, 1820002), (20, 910001), (79, 230380), (158, 115190), (316, 57595), (395, 46076), (790, 23038), (1580, 11519)]