21467320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1783}}^1$

素因数の和:1844

約数の個数: 64

約数和(自身を含む): 56517120

約数和(自身を除く): 35049800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 1783, 2408, 3010, 3566, 6020, 7132, 8915, 12040, 12481, 14264, 17830, 24962, 35660, 49924, 62405, 71320, 76669, 99848, 124810, 153338, 249620, 306676, 383345, 499240, 536683, 613352, 766690, 1073366, 1533380, 2146732, 2683415, 3066760, 4293464, 5366830, 10733660, 21467320]

約数ペア:

[(1, 21467320), (2, 10733660), (4, 5366830), (5, 4293464), (7, 3066760), (8, 2683415), (10, 2146732), (14, 1533380), (20, 1073366), (28, 766690), (35, 613352), (40, 536683), (43, 499240), (56, 383345), (70, 306676), (86, 249620), (140, 153338), (172, 124810), (215, 99848), (280, 76669), (301, 71320), (344, 62405), (430, 49924), (602, 35660), (860, 24962), (1204, 17830), (1505, 14264), (1720, 12481), (1783, 12040), (2408, 8915), (3010, 7132), (3566, 6020)]