19405040

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5641}}^1$

素因数の和:5697

約数の個数: 40

約数和(自身を含む): 46174128

約数和(自身を除く): 26769088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5641, 11282, 22564, 28205, 45128, 56410, 90256, 112820, 225640, 242563, 451280, 485126, 970252, 1212815, 1940504, 2425630, 3881008, 4851260, 9702520, 19405040]

約数ペア:

[(1, 19405040), (2, 9702520), (4, 4851260), (5, 3881008), (8, 2425630), (10, 1940504), (16, 1212815), (20, 970252), (40, 485126), (43, 451280), (80, 242563), (86, 225640), (172, 112820), (215, 90256), (344, 56410), (430, 45128), (688, 28205), (860, 22564), (1720, 11282), (3440, 5641)]