1640987047

素因数分解:

$7^1\times {\mathrm{61}}^2\times {\mathrm{251}}^2$

素因数の和:631

約数の個数: 18

約数和(自身を含む): 1914288792

約数和(自身を除く): 273301745

約数列:

[1, 7, 61, 251, 427, 1757, 3721, 15311, 26047, 63001, 107177, 441007, 933971, 3843061, 6537797, 26901427, 234426721, 1640987047]

約数ペア:

[(1, 1640987047), (7, 234426721), (61, 26901427), (251, 6537797), (427, 3843061), (1757, 933971), (3721, 441007), (15311, 107177), (26047, 63001)]