28991180

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8893}}^1$

素因数の和:9065

約数の個数: 24

約数和(自身を含む): 61261872

約数和(自身を除く): 32270692

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 8893, 17786, 35572, 44465, 88930, 177860, 1449559, 2899118, 5798236, 7247795, 14495590, 28991180]

約数ペア:

[(1, 28991180), (2, 14495590), (4, 7247795), (5, 5798236), (10, 2899118), (20, 1449559), (163, 177860), (326, 88930), (652, 44465), (815, 35572), (1630, 17786), (3260, 8893)]