19657480

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4349}}^1$

素因数の和:4473

約数の個数: 32

約数和(自身を含む): 44631000

約数和(自身を除く): 24973520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4349, 4520, 8698, 17396, 21745, 34792, 43490, 86980, 173960, 491437, 982874, 1965748, 2457185, 3931496, 4914370, 9828740, 19657480]

約数ペア:

[(1, 19657480), (2, 9828740), (4, 4914370), (5, 3931496), (8, 2457185), (10, 1965748), (20, 982874), (40, 491437), (113, 173960), (226, 86980), (452, 43490), (565, 34792), (904, 21745), (1130, 17396), (2260, 8698), (4349, 4520)]