21006684490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{709}}^1\times {\mathrm{269351}}^1$

素因数の和:270078

約数の個数: 32

約数和(自身を含む): 41307822720

約数和(自身を除く): 20301138230

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 709, 1418, 3545, 7090, 7799, 15598, 38995, 77990, 269351, 538702, 1346755, 2693510, 2962861, 5925722, 14814305, 29628610, 190969859, 381939718, 954849295, 1909698590, 2100668449, 4201336898, 10503342245, 21006684490]

約数ペア:

[(1, 21006684490), (2, 10503342245), (5, 4201336898), (10, 2100668449), (11, 1909698590), (22, 954849295), (55, 381939718), (110, 190969859), (709, 29628610), (1418, 14814305), (3545, 5925722), (7090, 2962861), (7799, 2693510), (15598, 1346755), (38995, 538702), (77990, 269351)]