3920740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 8692992

約数和(自身を除く): 4772252

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 97, 172, 188, 194, 215, 235, 388, 430, 470, 485, 860, 940, 970, 1940, 2021, 4042, 4171, 4559, 8084, 8342, 9118, 10105, 16684, 18236, 20210, 20855, 22795, 40420, 41710, 45590, 83420, 91180, 196037, 392074, 784148, 980185, 1960370, 3920740]

約数ペア:

[(1, 3920740), (2, 1960370), (4, 980185), (5, 784148), (10, 392074), (20, 196037), (43, 91180), (47, 83420), (86, 45590), (94, 41710), (97, 40420), (172, 22795), (188, 20855), (194, 20210), (215, 18236), (235, 16684), (388, 10105), (430, 9118), (470, 8342), (485, 8084), (860, 4559), (940, 4171), (970, 4042), (1940, 2021)]