19997784

素因数分解:

$2^3\times 3^2\times {\mathrm{277747}}^1$

素因数の和:277759

約数の個数: 24

約数和(自身を含む): 54160860

約数和(自身を除く): 34163076

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 277747, 555494, 833241, 1110988, 1666482, 2221976, 2499723, 3332964, 4999446, 6665928, 9998892, 19997784]

約数ペア:

[(1, 19997784), (2, 9998892), (3, 6665928), (4, 4999446), (6, 3332964), (8, 2499723), (9, 2221976), (12, 1666482), (18, 1110988), (24, 833241), (36, 555494), (72, 277747)]