640365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3881}}^1$

素因数の和:3900

約数の個数: 16

約数和(自身を含む): 1118016

約数和(自身を除く): 477651

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 3881, 11643, 19405, 42691, 58215, 128073, 213455, 640365]

約数ペア:

[(1, 640365), (3, 213455), (5, 128073), (11, 58215), (15, 42691), (33, 19405), (55, 11643), (165, 3881)]