20349320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11831}}^1$

素因数の和:11885

約数の個数: 32

約数和(自身を含む): 46854720

約数和(自身を除く): 26505400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11831, 23662, 47324, 59155, 94648, 118310, 236620, 473240, 508733, 1017466, 2034932, 2543665, 4069864, 5087330, 10174660, 20349320]

約数ペア:

[(1, 20349320), (2, 10174660), (4, 5087330), (5, 4069864), (8, 2543665), (10, 2034932), (20, 1017466), (40, 508733), (43, 473240), (86, 236620), (172, 118310), (215, 94648), (344, 59155), (430, 47324), (860, 23662), (1720, 11831)]