80821940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{93979}}^1$

素因数の和:94031

約数の個数: 24

約数和(自身を含む): 173675040

約数和(自身を除く): 92853100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 93979, 187958, 375916, 469895, 939790, 1879580, 4041097, 8082194, 16164388, 20205485, 40410970, 80821940]

約数ペア:

[(1, 80821940), (2, 40410970), (4, 20205485), (5, 16164388), (10, 8082194), (20, 4041097), (43, 1879580), (86, 939790), (172, 469895), (215, 375916), (430, 187958), (860, 93979)]