18940929

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1283}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 31226880

約数和(自身を除く): 12285951

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1283, 2109, 3849, 4921, 8981, 14763, 24377, 26943, 47471, 73131, 142413, 170639, 332297, 511917, 901949, 996891, 2705847, 6313643, 18940929]

約数ペア:

[(1, 18940929), (3, 6313643), (7, 2705847), (19, 996891), (21, 901949), (37, 511917), (57, 332297), (111, 170639), (133, 142413), (259, 73131), (399, 47471), (703, 26943), (777, 24377), (1283, 14763), (2109, 8981), (3849, 4921)]