81910120

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{5801}}^1$

素因数の和:6165

約数の個数: 32

約数和(自身を含む): 184851720

約数和(自身を除く): 102941600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 5801, 7060, 11602, 14120, 23204, 29005, 46408, 58010, 116020, 232040, 2047753, 4095506, 8191012, 10238765, 16382024, 20477530, 40955060, 81910120]

約数ペア:

[(1, 81910120), (2, 40955060), (4, 20477530), (5, 16382024), (8, 10238765), (10, 8191012), (20, 4095506), (40, 2047753), (353, 232040), (706, 116020), (1412, 58010), (1765, 46408), (2824, 29005), (3530, 23204), (5801, 14120), (7060, 11602)]