19238780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 44434656

約数和(自身を除く): 25195876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 557, 628, 785, 1114, 1570, 1727, 2228, 2785, 3140, 3454, 5570, 6127, 6908, 8635, 11140, 12254, 17270, 24508, 30635, 34540, 61270, 87449, 122540, 174898, 349796, 437245, 874490, 961939, 1748980, 1923878, 3847756, 4809695, 9619390, 19238780]

約数ペア:

[(1, 19238780), (2, 9619390), (4, 4809695), (5, 3847756), (10, 1923878), (11, 1748980), (20, 961939), (22, 874490), (44, 437245), (55, 349796), (110, 174898), (157, 122540), (220, 87449), (314, 61270), (557, 34540), (628, 30635), (785, 24508), (1114, 17270), (1570, 12254), (1727, 11140), (2228, 8635), (2785, 6908), (3140, 6127), (3454, 5570)]