21057597

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{70901}}^1$

素因数の和:70921

約数の個数: 16

約数和(自身を含む): 34032960

約数和(自身を除く): 12975363

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 70901, 212703, 638109, 779911, 1914327, 2339733, 7019199, 21057597]

約数ペア:

[(1, 21057597), (3, 7019199), (9, 2339733), (11, 1914327), (27, 779911), (33, 638109), (99, 212703), (297, 70901)]