18744237

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 29548800

約数和(自身を除く): 10804563

約数列:

[1, 3, 9, 27, 29, 37, 87, 111, 261, 333, 647, 783, 999, 1073, 1941, 3219, 5823, 9657, 17469, 18763, 23939, 28971, 56289, 71817, 168867, 215451, 506601, 646353, 694231, 2082693, 6248079, 18744237]

約数ペア:

[(1, 18744237), (3, 6248079), (9, 2082693), (27, 694231), (29, 646353), (37, 506601), (87, 215451), (111, 168867), (261, 71817), (333, 56289), (647, 28971), (783, 23939), (999, 18763), (1073, 17469), (1941, 9657), (3219, 5823)]