21056120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7211}}^1$

素因数の和:7295

約数の個数: 32

約数和(自身を含む): 48031920

約数和(自身を除く): 26975800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7211, 14422, 28844, 36055, 57688, 72110, 144220, 288440, 526403, 1052806, 2105612, 2632015, 4211224, 5264030, 10528060, 21056120]

約数ペア:

[(1, 21056120), (2, 10528060), (4, 5264030), (5, 4211224), (8, 2632015), (10, 2105612), (20, 1052806), (40, 526403), (73, 288440), (146, 144220), (292, 72110), (365, 57688), (584, 36055), (730, 28844), (1460, 14422), (2920, 7211)]