18863620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11939}}^1$

素因数の和:12027

約数の個数: 24

約数和(自身を含む): 40118400

約数和(自身を除く): 21254780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11939, 23878, 47756, 59695, 119390, 238780, 943181, 1886362, 3772724, 4715905, 9431810, 18863620]

約数ペア:

[(1, 18863620), (2, 9431810), (4, 4715905), (5, 3772724), (10, 1886362), (20, 943181), (79, 238780), (158, 119390), (316, 59695), (395, 47756), (790, 23878), (1580, 11939)]