20497876

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4547}}^1$

素因数の和:4588

約数の個数: 36

約数和(自身を含む): 43551648

約数和(自身を除く): 23053772

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4508, 4547, 9094, 18188, 31829, 63658, 104581, 127316, 209162, 222803, 418324, 445606, 732067, 891212, 1464134, 2928268, 5124469, 10248938, 20497876]

約数ペア:

[(1, 20497876), (2, 10248938), (4, 5124469), (7, 2928268), (14, 1464134), (23, 891212), (28, 732067), (46, 445606), (49, 418324), (92, 222803), (98, 209162), (161, 127316), (196, 104581), (322, 63658), (644, 31829), (1127, 18188), (2254, 9094), (4508, 4547)]