81308030

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 156691584

約数和(自身を除く): 75383554

約数列:

[1, 2, 5, 10, 19, 38, 95, 101, 190, 202, 223, 361, 446, 505, 722, 1010, 1115, 1805, 1919, 2230, 3610, 3838, 4237, 8474, 9595, 19190, 21185, 22523, 36461, 42370, 45046, 72922, 80503, 112615, 161006, 182305, 225230, 364610, 402515, 427937, 805030, 855874, 2139685, 4279370, 8130803, 16261606, 40654015, 81308030]

約数ペア:

[(1, 81308030), (2, 40654015), (5, 16261606), (10, 8130803), (19, 4279370), (38, 2139685), (95, 855874), (101, 805030), (190, 427937), (202, 402515), (223, 364610), (361, 225230), (446, 182305), (505, 161006), (722, 112615), (1010, 80503), (1115, 72922), (1805, 45046), (1919, 42370), (2230, 36461), (3610, 22523), (3838, 21185), (4237, 19190), (8474, 9595)]