21518288

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{122263}}^1$

素因数の和:122282

約数の個数: 20

約数和(自身を含む): 45482208

約数和(自身を除く): 23963920

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 122263, 244526, 489052, 978104, 1344893, 1956208, 2689786, 5379572, 10759144, 21518288]

約数ペア:

[(1, 21518288), (2, 10759144), (4, 5379572), (8, 2689786), (11, 1956208), (16, 1344893), (22, 978104), (44, 489052), (88, 244526), (176, 122263)]