20727837

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 34398000

約数和(自身を除く): 13670163

約数列:

[1, 3, 9, 13, 29, 39, 41, 87, 117, 123, 149, 261, 369, 377, 447, 533, 1131, 1189, 1341, 1599, 1937, 3393, 3567, 4321, 4797, 5811, 6109, 10701, 12963, 15457, 17433, 18327, 38889, 46371, 54981, 56173, 79417, 139113, 168519, 177161, 238251, 505557, 531483, 714753, 1594449, 2303093, 6909279, 20727837]

約数ペア:

[(1, 20727837), (3, 6909279), (9, 2303093), (13, 1594449), (29, 714753), (39, 531483), (41, 505557), (87, 238251), (117, 177161), (123, 168519), (149, 139113), (261, 79417), (369, 56173), (377, 54981), (447, 46371), (533, 38889), (1131, 18327), (1189, 17433), (1341, 15457), (1599, 12963), (1937, 10701), (3393, 6109), (3567, 5811), (4321, 4797)]