21386156

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{15679}}^1$

素因数の和:15725

約数の個数: 24

約数和(自身を含む): 42147840

約数和(自身を除く): 20761684

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 682, 1364, 15679, 31358, 62716, 172469, 344938, 486049, 689876, 972098, 1944196, 5346539, 10693078, 21386156]

約数ペア:

[(1, 21386156), (2, 10693078), (4, 5346539), (11, 1944196), (22, 972098), (31, 689876), (44, 486049), (62, 344938), (124, 172469), (341, 62716), (682, 31358), (1364, 15679)]