21680656

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43711}}^1$

素因数の和:43750

約数の個数: 20

約数和(自身を含む): 43362304

約数和(自身を除く): 21681648

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43711, 87422, 174844, 349688, 699376, 1355041, 2710082, 5420164, 10840328, 21680656]

約数ペア:

[(1, 21680656), (2, 10840328), (4, 5420164), (8, 2710082), (16, 1355041), (31, 699376), (62, 349688), (124, 174844), (248, 87422), (496, 43711)]