20639643580

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{227}}^1\times {\mathrm{25117}}^1$

素因数の和:25534

約数の個数: 48

約数和(自身を含む): 43776454176

約数和(自身を除く): 23136810596

約数列:

[1, 2, 4, 5, 10, 20, 181, 227, 362, 454, 724, 905, 908, 1135, 1810, 2270, 3620, 4540, 25117, 41087, 50234, 82174, 100468, 125585, 164348, 205435, 251170, 410870, 502340, 821740, 4546177, 5701559, 9092354, 11403118, 18184708, 22730885, 22806236, 28507795, 45461770, 57015590, 90923540, 114031180, 1031982179, 2063964358, 4127928716, 5159910895, 10319821790, 20639643580]

約数ペア:

[(1, 20639643580), (2, 10319821790), (4, 5159910895), (5, 4127928716), (10, 2063964358), (20, 1031982179), (181, 114031180), (227, 90923540), (362, 57015590), (454, 45461770), (724, 28507795), (905, 22806236), (908, 22730885), (1135, 18184708), (1810, 11403118), (2270, 9092354), (3620, 5701559), (4540, 4546177), (25117, 821740), (41087, 502340), (50234, 410870), (82174, 251170), (100468, 205435), (125585, 164348)]