20121129

素因数分解:

$3^6\times 7^1\times {\mathrm{3943}}^1$

素因数の和:3968

約数の個数: 28

約数和(自身を含む): 34486336

約数和(自身を除く): 14365207

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 3943, 5103, 11829, 27601, 35487, 82803, 106461, 248409, 319383, 745227, 958149, 2235681, 2874447, 6707043, 20121129]

約数ペア:

[(1, 20121129), (3, 6707043), (7, 2874447), (9, 2235681), (21, 958149), (27, 745227), (63, 319383), (81, 248409), (189, 106461), (243, 82803), (567, 35487), (729, 27601), (1701, 11829), (3943, 5103)]