21293337

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 32215680

約数和(自身を除く): 10922343

約数列:

[1, 3, 13, 29, 39, 67, 87, 201, 281, 377, 843, 871, 1131, 1943, 2613, 3653, 5829, 8149, 10959, 18827, 24447, 25259, 56481, 75777, 105937, 244751, 317811, 545983, 734253, 1637949, 7097779, 21293337]

約数ペア:

[(1, 21293337), (3, 7097779), (13, 1637949), (29, 734253), (39, 545983), (67, 317811), (87, 244751), (201, 105937), (281, 75777), (377, 56481), (843, 25259), (871, 24447), (1131, 18827), (1943, 10959), (2613, 8149), (3653, 5829)]