19681960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11443}}^1$

素因数の和:11497

約数の個数: 32

約数和(自身を含む): 45318240

約数和(自身を除く): 25636280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11443, 22886, 45772, 57215, 91544, 114430, 228860, 457720, 492049, 984098, 1968196, 2460245, 3936392, 4920490, 9840980, 19681960]

約数ペア:

[(1, 19681960), (2, 9840980), (4, 4920490), (5, 3936392), (8, 2460245), (10, 1968196), (20, 984098), (40, 492049), (43, 457720), (86, 228860), (172, 114430), (215, 91544), (344, 57215), (430, 45772), (860, 22886), (1720, 11443)]