19707261

素因数分解:

$3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1697}}^1$

素因数の和:1793

約数の個数: 24

約数和(自身を含む): 30971520

約数和(自身を除く): 11264259

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 553, 1659, 1697, 3871, 5091, 11613, 11879, 35637, 83153, 134063, 249459, 402189, 938441, 2815323, 6569087, 19707261]

約数ペア:

[(1, 19707261), (3, 6569087), (7, 2815323), (21, 938441), (49, 402189), (79, 249459), (147, 134063), (237, 83153), (553, 35637), (1659, 11879), (1697, 11613), (3871, 5091)]