7681640

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1061}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 17395560

約数和(自身を除く): 9713920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1061, 1448, 1810, 2122, 3620, 4244, 5305, 7240, 8488, 10610, 21220, 42440, 192041, 384082, 768164, 960205, 1536328, 1920410, 3840820, 7681640]

約数ペア:

[(1, 7681640), (2, 3840820), (4, 1920410), (5, 1536328), (8, 960205), (10, 768164), (20, 384082), (40, 192041), (181, 42440), (362, 21220), (724, 10610), (905, 8488), (1061, 7240), (1448, 5305), (1810, 4244), (2122, 3620)]