20138547

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 33308928

約数和(自身を除く): 13170381

約数列:

[1, 3, 11, 13, 23, 33, 39, 69, 143, 157, 169, 253, 299, 429, 471, 507, 759, 897, 1727, 1859, 2041, 3289, 3611, 3887, 5181, 5577, 6123, 9867, 10833, 11661, 22451, 26533, 39721, 42757, 46943, 67353, 79599, 119163, 128271, 140829, 291863, 516373, 610259, 875589, 1549119, 1830777, 6712849, 20138547]

約数ペア:

[(1, 20138547), (3, 6712849), (11, 1830777), (13, 1549119), (23, 875589), (33, 610259), (39, 516373), (69, 291863), (143, 140829), (157, 128271), (169, 119163), (253, 79599), (299, 67353), (429, 46943), (471, 42757), (507, 39721), (759, 26533), (897, 22451), (1727, 11661), (1859, 10833), (2041, 9867), (3289, 6123), (3611, 5577), (3887, 5181)]