21927159

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{42743}}^1$

素因数の和:42771

約数の個数: 16

約数和(自身を含む): 34195200

約数和(自身を除く): 12268041

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 42743, 128229, 384687, 812117, 1154061, 2436351, 7309053, 21927159]

約数ペア:

[(1, 21927159), (3, 7309053), (9, 2436351), (19, 1154061), (27, 812117), (57, 384687), (171, 128229), (513, 42743)]