21897956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{3947}}^1$

素因数の和:4043

約数の個数: 24

約数和(自身を含む): 40901280

約数和(自身を除く): 19003324

約数列:

[1, 2, 4, 19, 38, 73, 76, 146, 292, 1387, 2774, 3947, 5548, 7894, 15788, 74993, 149986, 288131, 299972, 576262, 1152524, 5474489, 10948978, 21897956]

約数ペア:

[(1, 21897956), (2, 10948978), (4, 5474489), (19, 1152524), (38, 576262), (73, 299972), (76, 288131), (146, 149986), (292, 74993), (1387, 15788), (2774, 7894), (3947, 5548)]