20541668

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{191}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 22810396

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 167, 191, 322, 334, 382, 644, 668, 764, 1169, 1337, 2338, 2674, 3841, 4393, 4676, 5348, 7682, 8786, 15364, 17572, 26887, 30751, 31897, 53774, 61502, 63794, 107548, 123004, 127588, 223279, 446558, 733631, 893116, 1467262, 2934524, 5135417, 10270834, 20541668]

約数ペア:

[(1, 20541668), (2, 10270834), (4, 5135417), (7, 2934524), (14, 1467262), (23, 893116), (28, 733631), (46, 446558), (92, 223279), (161, 127588), (167, 123004), (191, 107548), (322, 63794), (334, 61502), (382, 53774), (644, 31897), (668, 30751), (764, 26887), (1169, 17572), (1337, 15364), (2338, 8786), (2674, 7682), (3841, 5348), (4393, 4676)]