78180880

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22727}}^1$

素因数の和:22783

約数の個数: 40

約数和(自身を含む): 186005952

約数和(自身を除く): 107825072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 22727, 45454, 90908, 113635, 181816, 227270, 363632, 454540, 909080, 977261, 1818160, 1954522, 3909044, 4886305, 7818088, 9772610, 15636176, 19545220, 39090440, 78180880]

約数ペア:

[(1, 78180880), (2, 39090440), (4, 19545220), (5, 15636176), (8, 9772610), (10, 7818088), (16, 4886305), (20, 3909044), (40, 1954522), (43, 1818160), (80, 977261), (86, 909080), (172, 454540), (215, 363632), (344, 227270), (430, 181816), (688, 113635), (860, 90908), (1720, 45454), (3440, 22727)]