21663663

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^2\times {\mathrm{467}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 33800832

約数和(自身を除く): 12137169

約数列:

[1, 3, 7, 21, 47, 141, 329, 467, 987, 1401, 2209, 3269, 6627, 9807, 15463, 21949, 46389, 65847, 153643, 460929, 1031603, 3094809, 7221221, 21663663]

約数ペア:

[(1, 21663663), (3, 7221221), (7, 3094809), (21, 1031603), (47, 460929), (141, 153643), (329, 65847), (467, 46389), (987, 21949), (1401, 15463), (2209, 9807), (3269, 6627)]