21636307

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:703

約数の個数: 32

約数和(自身を含む): 29675520

約数和(自身を除く): 8039213

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 643, 1463, 1771, 3059, 4501, 4807, 7073, 12217, 14789, 33649, 49511, 85519, 103523, 134387, 162679, 280991, 940709, 1138753, 1966937, 3090901, 21636307]

約数ペア:

[(1, 21636307), (7, 3090901), (11, 1966937), (19, 1138753), (23, 940709), (77, 280991), (133, 162679), (161, 134387), (209, 103523), (253, 85519), (437, 49511), (643, 33649), (1463, 14789), (1771, 12217), (3059, 7073), (4501, 4807)]