188888680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109819}}^1$

素因数の和:109873

約数の個数: 32

約数和(自身を含む): 434887200

約数和(自身を除く): 245998520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 109819, 219638, 439276, 549095, 878552, 1098190, 2196380, 4392760, 4722217, 9444434, 18888868, 23611085, 37777736, 47222170, 94444340, 188888680]

約数ペア:

[(1, 188888680), (2, 94444340), (4, 47222170), (5, 37777736), (8, 23611085), (10, 18888868), (20, 9444434), (40, 4722217), (43, 4392760), (86, 2196380), (172, 1098190), (215, 878552), (344, 549095), (430, 439276), (860, 219638), (1720, 109819)]