21555856

素因数分解:

$2^4\times 7^1\times {\mathrm{192463}}^1$

素因数の和:192478

約数の個数: 20

約数和(自身を含む): 47731072

約数和(自身を除く): 26175216

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 192463, 384926, 769852, 1347241, 1539704, 2694482, 3079408, 5388964, 10777928, 21555856]

約数ペア:

[(1, 21555856), (2, 10777928), (4, 5388964), (7, 3079408), (8, 2694482), (14, 1539704), (16, 1347241), (28, 769852), (56, 384926), (112, 192463)]