77981168

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{256517}}^1$

素因数の和:256544

約数の個数: 20

約数和(自身を含む): 159041160

約数和(自身を除く): 81059992

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 256517, 513034, 1026068, 2052136, 4104272, 4873823, 9747646, 19495292, 38990584, 77981168]

約数ペア:

[(1, 77981168), (2, 38990584), (4, 19495292), (8, 9747646), (16, 4873823), (19, 4104272), (38, 2052136), (76, 1026068), (152, 513034), (304, 256517)]