21778468

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{997}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 39345152

約数和(自身を除く): 17566684

約数列:

[1, 2, 4, 43, 86, 127, 172, 254, 508, 997, 1994, 3988, 5461, 10922, 21844, 42871, 85742, 126619, 171484, 253238, 506476, 5444617, 10889234, 21778468]

約数ペア:

[(1, 21778468), (2, 10889234), (4, 5444617), (43, 506476), (86, 253238), (127, 171484), (172, 126619), (254, 85742), (508, 42871), (997, 21844), (1994, 10922), (3988, 5461)]