81316780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239167}}^1$

素因数の和:239193

約数の個数: 24

約数和(自身を含む): 180811008

約数和(自身を除く): 99494228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 239167, 478334, 956668, 1195835, 2391670, 4065839, 4783340, 8131678, 16263356, 20329195, 40658390, 81316780]

約数ペア:

[(1, 81316780), (2, 40658390), (4, 20329195), (5, 16263356), (10, 8131678), (17, 4783340), (20, 4065839), (34, 2391670), (68, 1195835), (85, 956668), (170, 478334), (340, 239167)]