20172820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 44121168

約数和(自身を除く): 23948348

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 146, 164, 205, 292, 337, 365, 410, 674, 730, 820, 1348, 1460, 1685, 2993, 3370, 5986, 6740, 11972, 13817, 14965, 24601, 27634, 29930, 49202, 55268, 59860, 69085, 98404, 123005, 138170, 246010, 276340, 492020, 1008641, 2017282, 4034564, 5043205, 10086410, 20172820]

約数ペア:

[(1, 20172820), (2, 10086410), (4, 5043205), (5, 4034564), (10, 2017282), (20, 1008641), (41, 492020), (73, 276340), (82, 246010), (146, 138170), (164, 123005), (205, 98404), (292, 69085), (337, 59860), (365, 55268), (410, 49202), (674, 29930), (730, 27634), (820, 24601), (1348, 14965), (1460, 13817), (1685, 11972), (2993, 6740), (3370, 5986)]