21680264

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{317}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 41670720

約数和(自身を除く): 19990456

約数列:

[1, 2, 4, 8, 83, 103, 166, 206, 317, 332, 412, 634, 664, 824, 1268, 2536, 8549, 17098, 26311, 32651, 34196, 52622, 65302, 68392, 105244, 130604, 210488, 261208, 2710033, 5420066, 10840132, 21680264]

約数ペア:

[(1, 21680264), (2, 10840132), (4, 5420066), (8, 2710033), (83, 261208), (103, 210488), (166, 130604), (206, 105244), (317, 68392), (332, 65302), (412, 52622), (634, 34196), (664, 32651), (824, 26311), (1268, 17098), (2536, 8549)]