20489744

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2477}}^1$

素因数の和:2543

約数の個数: 40

約数和(自身を含む): 44247168

約数和(自身を除く): 23757424

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 2477, 4136, 4954, 8272, 9908, 19816, 27247, 39632, 54494, 108988, 116419, 217976, 232838, 435952, 465676, 931352, 1280609, 1862704, 2561218, 5122436, 10244872, 20489744]

約数ペア:

[(1, 20489744), (2, 10244872), (4, 5122436), (8, 2561218), (11, 1862704), (16, 1280609), (22, 931352), (44, 465676), (47, 435952), (88, 232838), (94, 217976), (176, 116419), (188, 108988), (376, 54494), (517, 39632), (752, 27247), (1034, 19816), (2068, 9908), (2477, 8272), (4136, 4954)]