21439660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97453}}^1$

素因数の和:97473

約数の個数: 24

約数和(自身を含む): 49116816

約数和(自身を除く): 27677156

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 97453, 194906, 389812, 487265, 974530, 1071983, 1949060, 2143966, 4287932, 5359915, 10719830, 21439660]

約数ペア:

[(1, 21439660), (2, 10719830), (4, 5359915), (5, 4287932), (10, 2143966), (11, 1949060), (20, 1071983), (22, 974530), (44, 487265), (55, 389812), (110, 194906), (220, 97453)]