20199062980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{130367}}^1$

素因数の和:130564

約数の個数: 48

約数和(自身を含む): 43453218816

約数和(自身を除く): 23254155836

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 127, 244, 254, 305, 508, 610, 635, 1220, 1270, 2540, 7747, 15494, 30988, 38735, 77470, 130367, 154940, 260734, 521468, 651835, 1303670, 2607340, 7952387, 15904774, 16556609, 31809548, 33113218, 39761935, 66226436, 79523870, 82783045, 159047740, 165566090, 331132180, 1009953149, 2019906298, 4039812596, 5049765745, 10099531490, 20199062980]

約数ペア:

[(1, 20199062980), (2, 10099531490), (4, 5049765745), (5, 4039812596), (10, 2019906298), (20, 1009953149), (61, 331132180), (122, 165566090), (127, 159047740), (244, 82783045), (254, 79523870), (305, 66226436), (508, 39761935), (610, 33113218), (635, 31809548), (1220, 16556609), (1270, 15904774), (2540, 7952387), (7747, 2607340), (15494, 1303670), (30988, 651835), (38735, 521468), (77470, 260734), (130367, 154940)]