80200180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56479}}^1$

素因数の和:56559

約数の個数: 24

約数和(自身を含む): 170795520

約数和(自身を除く): 90595340

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56479, 112958, 225916, 282395, 564790, 1129580, 4010009, 8020018, 16040036, 20050045, 40100090, 80200180]

約数ペア:

[(1, 80200180), (2, 40100090), (4, 20050045), (5, 16040036), (10, 8020018), (20, 4010009), (71, 1129580), (142, 564790), (284, 282395), (355, 225916), (710, 112958), (1420, 56479)]