20689858

素因数分解:

$2^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{3461}}^1$

素因数の和:3538

約数の個数: 24

約数和(自身を含む): 36704124

約数和(自身を除く): 16014266

約数列:

[1, 2, 7, 14, 49, 61, 98, 122, 427, 854, 2989, 3461, 5978, 6922, 24227, 48454, 169589, 211121, 339178, 422242, 1477847, 2955694, 10344929, 20689858]

約数ペア:

[(1, 20689858), (2, 10344929), (7, 2955694), (14, 1477847), (49, 422242), (61, 339178), (98, 211121), (122, 169589), (427, 48454), (854, 24227), (2989, 6922), (3461, 5978)]