21674121

素因数分解:

$3^1\times 7^2\times {\mathrm{283}}^1\times {\mathrm{521}}^1$

素因数の和:821

約数の個数: 24

約数和(自身を含む): 33800544

約数和(自身を除く): 12126423

約数列:

[1, 3, 7, 21, 49, 147, 283, 521, 849, 1563, 1981, 3647, 5943, 10941, 13867, 25529, 41601, 76587, 147443, 442329, 1032101, 3096303, 7224707, 21674121]

約数ペア:

[(1, 21674121), (3, 7224707), (7, 3096303), (21, 1032101), (49, 442329), (147, 147443), (283, 76587), (521, 41601), (849, 25529), (1563, 13867), (1981, 10941), (3647, 5943)]