21990195

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8011}}^1$

素因数の和:8083

約数の個数: 24

約数和(自身を含む): 38746032

約数和(自身を除く): 16755837

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 8011, 24033, 40055, 72099, 120165, 360495, 488671, 1466013, 2443355, 4398039, 7330065, 21990195]

約数ペア:

[(1, 21990195), (3, 7330065), (5, 4398039), (9, 2443355), (15, 1466013), (45, 488671), (61, 360495), (183, 120165), (305, 72099), (549, 40055), (915, 24033), (2745, 8011)]