20837905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{6211}}^1$

素因数の和:6288

約数の個数: 16

約数和(自身を含む): 27730368

約数和(自身を除く): 6892463

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 6211, 31055, 68321, 341605, 378871, 1894355, 4167581, 20837905]

約数ペア:

[(1, 20837905), (5, 4167581), (11, 1894355), (55, 378871), (61, 341605), (305, 68321), (671, 31055), (3355, 6211)]