21200427

素因数分解:

$3^3\times {\mathrm{191}}^1\times {\mathrm{4111}}^1$

素因数の和:4311

約数の個数: 16

約数和(自身を含む): 31580160

約数和(自身を除く): 10379733

約数列:

[1, 3, 9, 27, 191, 573, 1719, 4111, 5157, 12333, 36999, 110997, 785201, 2355603, 7066809, 21200427]

約数ペア:

[(1, 21200427), (3, 7066809), (9, 2355603), (27, 785201), (191, 110997), (573, 36999), (1719, 12333), (4111, 5157)]