21694270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1531}}^1$

素因数の和:1660

約数の個数: 32

約数和(自身を含む): 42467040

約数和(自身を除く): 20772770

約数列:

[1, 2, 5, 10, 13, 26, 65, 109, 130, 218, 545, 1090, 1417, 1531, 2834, 3062, 7085, 7655, 14170, 15310, 19903, 39806, 99515, 166879, 199030, 333758, 834395, 1668790, 2169427, 4338854, 10847135, 21694270]

約数ペア:

[(1, 21694270), (2, 10847135), (5, 4338854), (10, 2169427), (13, 1668790), (26, 834395), (65, 333758), (109, 199030), (130, 166879), (218, 99515), (545, 39806), (1090, 19903), (1417, 15310), (1531, 14170), (2834, 7655), (3062, 7085)]