21683545

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 28670976

約数和(自身を除く): 6987431

約数列:

[1, 5, 13, 65, 67, 169, 335, 383, 845, 871, 1915, 4355, 4979, 11323, 24895, 25661, 56615, 64727, 128305, 323635, 333593, 1667965, 4336709, 21683545]

約数ペア:

[(1, 21683545), (5, 4336709), (13, 1667965), (65, 333593), (67, 323635), (169, 128305), (335, 64727), (383, 56615), (845, 25661), (871, 24895), (1915, 11323), (4355, 4979)]