13778920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8011}}^1$

素因数の和:8065

約数の個数: 32

約数和(自身を含む): 31727520

約数和(自身を除く): 17948600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 8011, 16022, 32044, 40055, 64088, 80110, 160220, 320440, 344473, 688946, 1377892, 1722365, 2755784, 3444730, 6889460, 13778920]

約数ペア:

[(1, 13778920), (2, 6889460), (4, 3444730), (5, 2755784), (8, 1722365), (10, 1377892), (20, 688946), (40, 344473), (43, 320440), (86, 160220), (172, 80110), (215, 64088), (344, 40055), (430, 32044), (860, 16022), (1720, 8011)]