21497466807

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1778561}}^1$

素因数の和:1778663

約数の個数: 24

約数和(自身を含む): 33294680640

約数和(自身を除く): 11797213833

約数列:

[1, 3, 9, 17, 51, 79, 153, 237, 711, 1343, 4029, 12087, 1778561, 5335683, 16007049, 30235537, 90706611, 140506319, 272119833, 421518957, 1264556871, 2388607423, 7165822269, 21497466807]

約数ペア:

[(1, 21497466807), (3, 7165822269), (9, 2388607423), (17, 1264556871), (51, 421518957), (79, 272119833), (153, 140506319), (237, 90706611), (711, 30235537), (1343, 16007049), (4029, 5335683), (12087, 1778561)]