19994884

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{337}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 43458688

約数和(自身を除く): 23463804

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 163, 182, 326, 337, 364, 652, 674, 1141, 1348, 2119, 2282, 2359, 4238, 4381, 4564, 4718, 8476, 8762, 9436, 14833, 17524, 29666, 30667, 54931, 59332, 61334, 109862, 122668, 219724, 384517, 714103, 769034, 1428206, 1538068, 2856412, 4998721, 9997442, 19994884]

約数ペア:

[(1, 19994884), (2, 9997442), (4, 4998721), (7, 2856412), (13, 1538068), (14, 1428206), (26, 769034), (28, 714103), (52, 384517), (91, 219724), (163, 122668), (182, 109862), (326, 61334), (337, 59332), (364, 54931), (652, 30667), (674, 29666), (1141, 17524), (1348, 14833), (2119, 9436), (2282, 8762), (2359, 8476), (4238, 4718), (4381, 4564)]