19980459862

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{691}}^1\times {\mathrm{823}}^1\times {\mathrm{1597}}^1$

素因数の和:3124

約数の個数: 32

約数和(自身を含む): 32802925824

約数和(自身を除く): 12822465962

約数列:

[1, 2, 11, 22, 691, 823, 1382, 1597, 1646, 3194, 7601, 9053, 15202, 17567, 18106, 35134, 568693, 1103527, 1137386, 1314331, 2207054, 2628662, 6255623, 12138797, 12511246, 14457641, 24277594, 28915282, 908202721, 1816405442, 9990229931, 19980459862]

約数ペア:

[(1, 19980459862), (2, 9990229931), (11, 1816405442), (22, 908202721), (691, 28915282), (823, 24277594), (1382, 14457641), (1597, 12511246), (1646, 12138797), (3194, 6255623), (7601, 2628662), (9053, 2207054), (15202, 1314331), (17567, 1137386), (18106, 1103527), (35134, 568693)]