19977518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{15391}}^1$

素因数の和:15463

約数の個数: 16

約数和(自身を含む): 33246720

約数和(自身を除く): 13269202

約数列:

[1, 2, 11, 22, 59, 118, 649, 1298, 15391, 30782, 169301, 338602, 908069, 1816138, 9988759, 19977518]

約数ペア:

[(1, 19977518), (2, 9988759), (11, 1816138), (22, 908069), (59, 338602), (118, 169301), (649, 30782), (1298, 15391)]