251011820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1\times {\mathrm{947}}^1$

素因数の和:1442

約数の個数: 48

約数和(自身を含む): 547071840

約数和(自身を除く): 296060020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 457, 580, 914, 947, 1828, 1894, 2285, 3788, 4570, 4735, 9140, 9470, 13253, 18940, 26506, 27463, 53012, 54926, 66265, 109852, 132530, 137315, 265060, 274630, 432779, 549260, 865558, 1731116, 2163895, 4327790, 8655580, 12550591, 25101182, 50202364, 62752955, 125505910, 251011820]

約数ペア:

[(1, 251011820), (2, 125505910), (4, 62752955), (5, 50202364), (10, 25101182), (20, 12550591), (29, 8655580), (58, 4327790), (116, 2163895), (145, 1731116), (290, 865558), (457, 549260), (580, 432779), (914, 274630), (947, 265060), (1828, 137315), (1894, 132530), (2285, 109852), (3788, 66265), (4570, 54926), (4735, 53012), (9140, 27463), (9470, 26506), (13253, 18940)]