31203909

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 52902720

約数和(自身を除く): 21698811

約数列:

[1, 3, 9, 11, 19, 33, 53, 57, 99, 159, 171, 209, 313, 477, 583, 627, 939, 1007, 1749, 1881, 2817, 3021, 3443, 5247, 5947, 9063, 10329, 11077, 16589, 17841, 30987, 33231, 49767, 53523, 65417, 99693, 149301, 182479, 196251, 315191, 547437, 588753, 945573, 1642311, 2836719, 3467101, 10401303, 31203909]

約数ペア:

[(1, 31203909), (3, 10401303), (9, 3467101), (11, 2836719), (19, 1642311), (33, 945573), (53, 588753), (57, 547437), (99, 315191), (159, 196251), (171, 182479), (209, 149301), (313, 99693), (477, 65417), (583, 53523), (627, 49767), (939, 33231), (1007, 30987), (1749, 17841), (1881, 16589), (2817, 11077), (3021, 10329), (3443, 9063), (5247, 5947)]