17981810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{193}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 40898304

約数和(自身を除く): 22916494

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 193, 242, 385, 386, 605, 770, 847, 965, 1210, 1331, 1351, 1694, 1930, 2123, 2662, 2702, 4235, 4246, 6655, 6755, 8470, 9317, 10615, 13310, 13510, 14861, 18634, 21230, 23353, 29722, 46585, 46706, 74305, 93170, 116765, 148610, 163471, 233530, 256883, 326942, 513766, 817355, 1284415, 1634710, 1798181, 2568830, 3596362, 8990905, 17981810]

約数ペア:

[(1, 17981810), (2, 8990905), (5, 3596362), (7, 2568830), (10, 1798181), (11, 1634710), (14, 1284415), (22, 817355), (35, 513766), (55, 326942), (70, 256883), (77, 233530), (110, 163471), (121, 148610), (154, 116765), (193, 93170), (242, 74305), (385, 46706), (386, 46585), (605, 29722), (770, 23353), (847, 21230), (965, 18634), (1210, 14861), (1331, 13510), (1351, 13310), (1694, 10615), (1930, 9317), (2123, 8470), (2662, 6755), (2702, 6655), (4235, 4246)]