180821380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{4391}}^1$

素因数の和:4500

約数の個数: 48

約数和(自身を含む): 398442240

約数和(自身を除く): 217620860

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 580, 710, 1420, 2059, 4118, 4391, 8236, 8782, 10295, 17564, 20590, 21955, 41180, 43910, 87820, 127339, 254678, 311761, 509356, 623522, 636695, 1247044, 1273390, 1558805, 2546780, 3117610, 6235220, 9041069, 18082138, 36164276, 45205345, 90410690, 180821380]

約数ペア:

[(1, 180821380), (2, 90410690), (4, 45205345), (5, 36164276), (10, 18082138), (20, 9041069), (29, 6235220), (58, 3117610), (71, 2546780), (116, 1558805), (142, 1273390), (145, 1247044), (284, 636695), (290, 623522), (355, 509356), (580, 311761), (710, 254678), (1420, 127339), (2059, 87820), (4118, 43910), (4391, 41180), (8236, 21955), (8782, 20590), (10295, 17564)]