21082040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:181

約数の個数: 128

約数和(自身を含む): 59304960

約数和(自身を除く): 38222920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 43, 56, 68, 70, 85, 86, 103, 119, 136, 140, 170, 172, 206, 215, 238, 280, 301, 340, 344, 412, 430, 476, 515, 595, 602, 680, 721, 731, 824, 860, 952, 1030, 1190, 1204, 1442, 1462, 1505, 1720, 1751, 2060, 2380, 2408, 2884, 2924, 3010, 3502, 3605, 3655, 4120, 4429, 4760, 5117, 5768, 5848, 6020, 7004, 7210, 7310, 8755, 8858, 10234, 12040, 12257, 14008, 14420, 14620, 17510, 17716, 20468, 22145, 24514, 25585, 28840, 29240, 31003, 35020, 35432, 40936, 44290, 49028, 51170, 61285, 62006, 70040, 75293, 88580, 98056, 102340, 122570, 124012, 150586, 155015, 177160, 204680, 245140, 248024, 301172, 310030, 376465, 490280, 527051, 602344, 620060, 752930, 1054102, 1240120, 1505860, 2108204, 2635255, 3011720, 4216408, 5270510, 10541020, 21082040]

約数ペア:

[(1, 21082040), (2, 10541020), (4, 5270510), (5, 4216408), (7, 3011720), (8, 2635255), (10, 2108204), (14, 1505860), (17, 1240120), (20, 1054102), (28, 752930), (34, 620060), (35, 602344), (40, 527051), (43, 490280), (56, 376465), (68, 310030), (70, 301172), (85, 248024), (86, 245140), (103, 204680), (119, 177160), (136, 155015), (140, 150586), (170, 124012), (172, 122570), (206, 102340), (215, 98056), (238, 88580), (280, 75293), (301, 70040), (340, 62006), (344, 61285), (412, 51170), (430, 49028), (476, 44290), (515, 40936), (595, 35432), (602, 35020), (680, 31003), (721, 29240), (731, 28840), (824, 25585), (860, 24514), (952, 22145), (1030, 20468), (1190, 17716), (1204, 17510), (1442, 14620), (1462, 14420), (1505, 14008), (1720, 12257), (1751, 12040), (2060, 10234), (2380, 8858), (2408, 8755), (2884, 7310), (2924, 7210), (3010, 7004), (3502, 6020), (3605, 5848), (3655, 5768), (4120, 5117), (4429, 4760)]