21081568

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 22028576

約数列:

[1, 2, 4, 8, 16, 32, 47, 94, 107, 131, 188, 214, 262, 376, 428, 524, 752, 856, 1048, 1504, 1712, 2096, 3424, 4192, 5029, 6157, 10058, 12314, 14017, 20116, 24628, 28034, 40232, 49256, 56068, 80464, 98512, 112136, 160928, 197024, 224272, 448544, 658799, 1317598, 2635196, 5270392, 10540784, 21081568]

約数ペア:

[(1, 21081568), (2, 10540784), (4, 5270392), (8, 2635196), (16, 1317598), (32, 658799), (47, 448544), (94, 224272), (107, 197024), (131, 160928), (188, 112136), (214, 98512), (262, 80464), (376, 56068), (428, 49256), (524, 40232), (752, 28034), (856, 24628), (1048, 20116), (1504, 14017), (1712, 12314), (2096, 10058), (3424, 6157), (4192, 5029)]