20545821

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2267}}^1$

素因数の和:2345

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 11296899

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2267, 3021, 6801, 9063, 20403, 43073, 120151, 129219, 360453, 387657, 1081359, 2282869, 6848607, 20545821]

約数ペア:

[(1, 20545821), (3, 6848607), (9, 2282869), (19, 1081359), (53, 387657), (57, 360453), (159, 129219), (171, 120151), (477, 43073), (1007, 20403), (2267, 9063), (3021, 6801)]