19901079

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1811}}^1$

素因数の和:1868

約数の個数: 32

約数和(自身を含む): 33050880

約数和(自身を除く): 13149801

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 297, 333, 407, 999, 1221, 1811, 3663, 5433, 10989, 16299, 19921, 48897, 59763, 67007, 179289, 201021, 537867, 603063, 737077, 1809189, 2211231, 6633693, 19901079]

約数ペア:

[(1, 19901079), (3, 6633693), (9, 2211231), (11, 1809189), (27, 737077), (33, 603063), (37, 537867), (99, 201021), (111, 179289), (297, 67007), (333, 59763), (407, 48897), (999, 19921), (1221, 16299), (1811, 10989), (3663, 5433)]