21121738

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15739}}^1$

素因数の和:15813

約数の個数: 16

約数和(自身を含む): 35131680

約数和(自身を除く): 14009942

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 15739, 31478, 173129, 346258, 960079, 1920158, 10560869, 21121738]

約数ペア:

[(1, 21121738), (2, 10560869), (11, 1920158), (22, 960079), (61, 346258), (122, 173129), (671, 31478), (1342, 15739)]