399686576

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{38971}}^1$

素因数の和:39620

約数の個数: 20

約数和(自身を含む): 775620744

約数和(自身を除く): 375934168

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2564, 5128, 10256, 38971, 77942, 155884, 311768, 623536, 24980411, 49960822, 99921644, 199843288, 399686576]

約数ペア:

[(1, 399686576), (2, 199843288), (4, 99921644), (8, 49960822), (16, 24980411), (641, 623536), (1282, 311768), (2564, 155884), (5128, 77942), (10256, 38971)]