21654544

素因数分解:

$2^4\times {\mathrm{379}}^1\times {\mathrm{3571}}^1$

素因数の和:3958

約数の個数: 20

約数和(自身を含む): 42078160

約数和(自身を除く): 20423616

約数列:

[1, 2, 4, 8, 16, 379, 758, 1516, 3032, 3571, 6064, 7142, 14284, 28568, 57136, 1353409, 2706818, 5413636, 10827272, 21654544]

約数ペア:

[(1, 21654544), (2, 10827272), (4, 5413636), (8, 2706818), (16, 1353409), (379, 57136), (758, 28568), (1516, 14284), (3032, 7142), (3571, 6064)]