18819260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 41549760

約数和(自身を除く): 22730500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 457, 580, 710, 914, 1420, 1828, 2059, 2285, 4118, 4570, 8236, 9140, 10295, 13253, 20590, 26506, 32447, 41180, 53012, 64894, 66265, 129788, 132530, 162235, 265060, 324470, 648940, 940963, 1881926, 3763852, 4704815, 9409630, 18819260]

約数ペア:

[(1, 18819260), (2, 9409630), (4, 4704815), (5, 3763852), (10, 1881926), (20, 940963), (29, 648940), (58, 324470), (71, 265060), (116, 162235), (142, 132530), (145, 129788), (284, 66265), (290, 64894), (355, 53012), (457, 41180), (580, 32447), (710, 26506), (914, 20590), (1420, 13253), (1828, 10295), (2059, 9140), (2285, 8236), (4118, 4570)]