18820908

素因数分解:

$2^2\times 3^2\times {\mathrm{431}}^1\times {\mathrm{1213}}^1$

素因数の和:1654

約数の個数: 36

約数和(自身を含む): 47724768

約数和(自身を除く): 28903860

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 431, 862, 1213, 1293, 1724, 2426, 2586, 3639, 3879, 4852, 5172, 7278, 7758, 10917, 14556, 15516, 21834, 43668, 522803, 1045606, 1568409, 2091212, 3136818, 4705227, 6273636, 9410454, 18820908]

約数ペア:

[(1, 18820908), (2, 9410454), (3, 6273636), (4, 4705227), (6, 3136818), (9, 2091212), (12, 1568409), (18, 1045606), (36, 522803), (431, 43668), (862, 21834), (1213, 15516), (1293, 14556), (1724, 10917), (2426, 7758), (2586, 7278), (3639, 5172), (3879, 4852)]