21065103

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6343}}^1$

素因数の和:6396

約数の個数: 20

約数和(自身を含む): 32240208

約数和(自身を除く): 11175105

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6343, 19029, 57087, 171261, 260063, 513783, 780189, 2340567, 7021701, 21065103]

約数ペア:

[(1, 21065103), (3, 7021701), (9, 2340567), (27, 780189), (41, 513783), (81, 260063), (123, 171261), (369, 57087), (1107, 19029), (3321, 6343)]