638175122

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{345707}}^1$

素因数の和:345793

約数の個数: 16

約数和(自身を含む): 1045420992

約数和(自身を除く): 407245870

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 345707, 691414, 4494191, 8988382, 24545197, 49090394, 319087561, 638175122]

約数ペア:

[(1, 638175122), (2, 319087561), (13, 49090394), (26, 24545197), (71, 8988382), (142, 4494191), (923, 691414), (1846, 345707)]