21047656

素因数分解:

$2^3\times 7^2\times {\mathrm{53693}}^1$

素因数の和:53713

約数の個数: 24

約数和(自身を含む): 45908370

約数和(自身を除く): 24860714

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 53693, 107386, 214772, 375851, 429544, 751702, 1503404, 2630957, 3006808, 5261914, 10523828, 21047656]

約数ペア:

[(1, 21047656), (2, 10523828), (4, 5261914), (7, 3006808), (8, 2630957), (14, 1503404), (28, 751702), (49, 429544), (56, 375851), (98, 214772), (196, 107386), (392, 53693)]