21404380

素因数分解:

$2^2\times 5^1\times {\mathrm{953}}^1\times {\mathrm{1123}}^1$

素因数の和:2085

約数の個数: 24

約数和(自身を含む): 45036432

約数和(自身を除く): 23632052

約数列:

[1, 2, 4, 5, 10, 20, 953, 1123, 1906, 2246, 3812, 4492, 4765, 5615, 9530, 11230, 19060, 22460, 1070219, 2140438, 4280876, 5351095, 10702190, 21404380]

約数ペア:

[(1, 21404380), (2, 10702190), (4, 5351095), (5, 4280876), (10, 2140438), (20, 1070219), (953, 22460), (1123, 19060), (1906, 11230), (2246, 9530), (3812, 5615), (4492, 4765)]