20255620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1879}}^1$

素因数の和:1913

約数の個数: 72

約数和(自身を含む): 54008640

約数和(自身を除く): 33753020

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1879, 2156, 2695, 3758, 5390, 7516, 9395, 10780, 13153, 18790, 20669, 26306, 37580, 41338, 52612, 65765, 82676, 92071, 103345, 131530, 144683, 184142, 206690, 263060, 289366, 368284, 413380, 460355, 578732, 723415, 920710, 1012781, 1446830, 1841420, 2025562, 2893660, 4051124, 5063905, 10127810, 20255620]

約数ペア:

[(1, 20255620), (2, 10127810), (4, 5063905), (5, 4051124), (7, 2893660), (10, 2025562), (11, 1841420), (14, 1446830), (20, 1012781), (22, 920710), (28, 723415), (35, 578732), (44, 460355), (49, 413380), (55, 368284), (70, 289366), (77, 263060), (98, 206690), (110, 184142), (140, 144683), (154, 131530), (196, 103345), (220, 92071), (245, 82676), (308, 65765), (385, 52612), (490, 41338), (539, 37580), (770, 26306), (980, 20669), (1078, 18790), (1540, 13153), (1879, 10780), (2156, 9395), (2695, 7516), (3758, 5390)]