81426520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{6763}}^1$

素因数の和:6824

約数の個数: 64

約数和(自身を含む): 214283520

約数和(自身を除く): 132857000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2408, 3010, 6020, 6763, 12040, 13526, 27052, 33815, 47341, 54104, 67630, 94682, 135260, 189364, 236705, 270520, 290809, 378728, 473410, 581618, 946820, 1163236, 1454045, 1893640, 2035663, 2326472, 2908090, 4071326, 5816180, 8142652, 10178315, 11632360, 16285304, 20356630, 40713260, 81426520]

約数ペア:

[(1, 81426520), (2, 40713260), (4, 20356630), (5, 16285304), (7, 11632360), (8, 10178315), (10, 8142652), (14, 5816180), (20, 4071326), (28, 2908090), (35, 2326472), (40, 2035663), (43, 1893640), (56, 1454045), (70, 1163236), (86, 946820), (140, 581618), (172, 473410), (215, 378728), (280, 290809), (301, 270520), (344, 236705), (430, 189364), (602, 135260), (860, 94682), (1204, 67630), (1505, 54104), (1720, 47341), (2408, 33815), (3010, 27052), (6020, 13526), (6763, 12040)]