21473518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{6217}}^1$

素因数の和:6387

約数の個数: 16

約数和(自身を含む): 35367984

約数和(自身を除く): 13894466

約数列:

[1, 2, 11, 22, 157, 314, 1727, 3454, 6217, 12434, 68387, 136774, 976069, 1952138, 10736759, 21473518]

約数ペア:

[(1, 21473518), (2, 10736759), (11, 1952138), (22, 976069), (157, 136774), (314, 68387), (1727, 12434), (3454, 6217)]