21965919

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{5279}}^1$

素因数の和:5374

約数の個数: 16

約数和(自身を含む): 31257600

約数和(自身を除く): 9291681

約数列:

[1, 3, 19, 57, 73, 219, 1387, 4161, 5279, 15837, 100301, 300903, 385367, 1156101, 7321973, 21965919]

約数ペア:

[(1, 21965919), (3, 7321973), (19, 1156101), (57, 385367), (73, 300903), (219, 100301), (1387, 15837), (4161, 5279)]