20156978510

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{639701}}^1$

素因数の和:639868

約数の個数: 32

約数和(自身を含む): 38136474432

約数和(自身を除く): 17979495922

約数列:

[1, 2, 5, 10, 23, 46, 115, 137, 230, 274, 685, 1370, 3151, 6302, 15755, 31510, 639701, 1279402, 3198505, 6397010, 14713123, 29426246, 73565615, 87639037, 147131230, 175278074, 438195185, 876390370, 2015697851, 4031395702, 10078489255, 20156978510]

約数ペア:

[(1, 20156978510), (2, 10078489255), (5, 4031395702), (10, 2015697851), (23, 876390370), (46, 438195185), (115, 175278074), (137, 147131230), (230, 87639037), (274, 73565615), (685, 29426246), (1370, 14713123), (3151, 6397010), (6302, 3198505), (15755, 1279402), (31510, 639701)]