399433984

素因数分解:

$2^8\times {\mathrm{1560289}}^1$

素因数の和:1560305

約数の個数: 18

約数和(自身を含む): 797308190

約数和(自身を除く): 397874206

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 1560289, 3120578, 6241156, 12482312, 24964624, 49929248, 99858496, 199716992, 399433984]

約数ペア:

[(1, 399433984), (2, 199716992), (4, 99858496), (8, 49929248), (16, 24964624), (32, 12482312), (64, 6241156), (128, 3120578), (256, 1560289)]