20542920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{887}}^1$

素因数の和:1094

約数の個数: 64

約数和(自身を含む): 62017920

約数和(自身を除く): 41475000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 193, 386, 579, 772, 887, 965, 1158, 1544, 1774, 1930, 2316, 2661, 2895, 3548, 3860, 4435, 4632, 5322, 5790, 7096, 7720, 8870, 10644, 11580, 13305, 17740, 21288, 23160, 26610, 35480, 53220, 106440, 171191, 342382, 513573, 684764, 855955, 1027146, 1369528, 1711910, 2054292, 2567865, 3423820, 4108584, 5135730, 6847640, 10271460, 20542920]

約数ペア:

[(1, 20542920), (2, 10271460), (3, 6847640), (4, 5135730), (5, 4108584), (6, 3423820), (8, 2567865), (10, 2054292), (12, 1711910), (15, 1369528), (20, 1027146), (24, 855955), (30, 684764), (40, 513573), (60, 342382), (120, 171191), (193, 106440), (386, 53220), (579, 35480), (772, 26610), (887, 23160), (965, 21288), (1158, 17740), (1544, 13305), (1774, 11580), (1930, 10644), (2316, 8870), (2661, 7720), (2895, 7096), (3548, 5790), (3860, 5322), (4435, 4632)]