18971205

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4999}}^1$

素因数の和:5041

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 15588795

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 4999, 14997, 24995, 54989, 74985, 114977, 164967, 274945, 344931, 574885, 824835, 1264747, 1724655, 3794241, 6323735, 18971205]

約数ペア:

[(1, 18971205), (3, 6323735), (5, 3794241), (11, 1724655), (15, 1264747), (23, 824835), (33, 574885), (55, 344931), (69, 274945), (115, 164967), (165, 114977), (253, 74985), (345, 54989), (759, 24995), (1265, 14997), (3795, 4999)]