19702256

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4091}}^1$

素因数の和:4149

約数の個数: 40

約数和(自身を含む): 44651904

約数和(自身を除く): 24949648

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4091, 4816, 8182, 16364, 28637, 32728, 57274, 65456, 114548, 175913, 229096, 351826, 458192, 703652, 1231391, 1407304, 2462782, 2814608, 4925564, 9851128, 19702256]

約数ペア:

[(1, 19702256), (2, 9851128), (4, 4925564), (7, 2814608), (8, 2462782), (14, 1407304), (16, 1231391), (28, 703652), (43, 458192), (56, 351826), (86, 229096), (112, 175913), (172, 114548), (301, 65456), (344, 57274), (602, 32728), (688, 28637), (1204, 16364), (2408, 8182), (4091, 4816)]