20217773360

素因数分解:

$2^4\times 5^1\times {\mathrm{383}}^1\times {\mathrm{659849}}^1$

素因数の和:660245

約数の個数: 40

約数和(自身を含む): 47129126400

約数和(自身を除く): 26911353040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 383, 766, 1532, 1915, 3064, 3830, 6128, 7660, 15320, 30640, 659849, 1319698, 2639396, 3299245, 5278792, 6598490, 10557584, 13196980, 26393960, 52787920, 252722167, 505444334, 1010888668, 1263610835, 2021777336, 2527221670, 4043554672, 5054443340, 10108886680, 20217773360]

約数ペア:

[(1, 20217773360), (2, 10108886680), (4, 5054443340), (5, 4043554672), (8, 2527221670), (10, 2021777336), (16, 1263610835), (20, 1010888668), (40, 505444334), (80, 252722167), (383, 52787920), (766, 26393960), (1532, 13196980), (1915, 10557584), (3064, 6598490), (3830, 5278792), (6128, 3299245), (7660, 2639396), (15320, 1319698), (30640, 659849)]