21691449

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2131}}^1$

素因数の和:2182

約数の個数: 32

約数和(自身を含む): 35817600

約数和(自身を除く): 14126151

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 261, 351, 377, 783, 1131, 2131, 3393, 6393, 10179, 19179, 27703, 57537, 61799, 83109, 185397, 249327, 556191, 747981, 803387, 1668573, 2410161, 7230483, 21691449]

約数ペア:

[(1, 21691449), (3, 7230483), (9, 2410161), (13, 1668573), (27, 803387), (29, 747981), (39, 556191), (87, 249327), (117, 185397), (261, 83109), (351, 61799), (377, 57537), (783, 27703), (1131, 19179), (2131, 10179), (3393, 6393)]