28052840

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1061}}^1$

素因数の和:1733

約数の個数: 32

約数和(自身を含む): 63273960

約数和(自身を除く): 35221120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1061, 1322, 2122, 2644, 3305, 4244, 5288, 5305, 6610, 8488, 10610, 13220, 21220, 26440, 42440, 701321, 1402642, 2805284, 3506605, 5610568, 7013210, 14026420, 28052840]

約数ペア:

[(1, 28052840), (2, 14026420), (4, 7013210), (5, 5610568), (8, 3506605), (10, 2805284), (20, 1402642), (40, 701321), (661, 42440), (1061, 26440), (1322, 21220), (2122, 13220), (2644, 10610), (3305, 8488), (4244, 6610), (5288, 5305)]