821123456

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{337633}}^1$

素因数の和:337666

約数の個数: 32

約数和(自身を含む): 1721933400

約数和(自身を除く): 900809944

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 608, 1216, 2432, 337633, 675266, 1350532, 2701064, 5402128, 6415027, 10804256, 12830054, 21608512, 25660108, 43217024, 51320216, 102640432, 205280864, 410561728, 821123456]

約数ペア:

[(1, 821123456), (2, 410561728), (4, 205280864), (8, 102640432), (16, 51320216), (19, 43217024), (32, 25660108), (38, 21608512), (64, 12830054), (76, 10804256), (128, 6415027), (152, 5402128), (304, 2701064), (608, 1350532), (1216, 675266), (2432, 337633)]