21507388

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 44835840

約数和(自身を除く): 23328452

約数列:

[1, 2, 4, 7, 14, 28, 47, 59, 94, 118, 188, 236, 277, 329, 413, 554, 658, 826, 1108, 1316, 1652, 1939, 2773, 3878, 5546, 7756, 11092, 13019, 16343, 19411, 26038, 32686, 38822, 52076, 65372, 77644, 91133, 114401, 182266, 228802, 364532, 457604, 768121, 1536242, 3072484, 5376847, 10753694, 21507388]

約数ペア:

[(1, 21507388), (2, 10753694), (4, 5376847), (7, 3072484), (14, 1536242), (28, 768121), (47, 457604), (59, 364532), (94, 228802), (118, 182266), (188, 114401), (236, 91133), (277, 77644), (329, 65372), (413, 52076), (554, 38822), (658, 32686), (826, 26038), (1108, 19411), (1316, 16343), (1652, 13019), (1939, 11092), (2773, 7756), (3878, 5546)]