20931730

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2687}}^1$

素因数の和:2754

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19710830

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2687, 3895, 5374, 7790, 13435, 26870, 51053, 102106, 110167, 220334, 255265, 510530, 550835, 1101670, 2093173, 4186346, 10465865, 20931730]

約数ペア:

[(1, 20931730), (2, 10465865), (5, 4186346), (10, 2093173), (19, 1101670), (38, 550835), (41, 510530), (82, 255265), (95, 220334), (190, 110167), (205, 102106), (410, 51053), (779, 26870), (1558, 13435), (2687, 7790), (3895, 5374)]