21308487977

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{15131}}^1\times {\mathrm{8747}}^1$

素因数の和:23908

約数の個数: 16

約数和(自身を含む): 25415949312

約数和(自身を除く): 4107461335

約数列:

[1, 7, 23, 161, 8747, 15131, 61229, 105917, 201181, 348013, 1408267, 2436091, 132350857, 926455999, 3044069711, 21308487977]

約数ペア:

[(1, 21308487977), (7, 3044069711), (23, 926455999), (161, 132350857), (8747, 2436091), (15131, 1408267), (61229, 348013), (105917, 201181)]