21420597

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20939}}^1$

素因数の和:20984

約数の個数: 16

約数和(自身を含む): 32163840

約数和(自身を除く): 10743243

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 20939, 62817, 230329, 649109, 690987, 1947327, 7140199, 21420597]

約数ペア:

[(1, 21420597), (3, 7140199), (11, 1947327), (31, 690987), (33, 649109), (93, 230329), (341, 62817), (1023, 20939)]