18678741753

素因数分解:

$3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1543}}^1\times {\mathrm{2243}}^1$

素因数の和:4053

約数の個数: 32

約数和(自身を含む): 28604860416

約数和(自身を除く): 9926118663

約数列:

[1, 3, 7, 21, 257, 771, 1543, 1799, 2243, 4629, 5397, 6729, 10801, 15701, 32403, 47103, 396551, 576451, 1189653, 1729353, 2775857, 3460949, 4035157, 8327571, 10382847, 12105471, 24226643, 72679929, 889463893, 2668391679, 6226247251, 18678741753]

約数ペア:

[(1, 18678741753), (3, 6226247251), (7, 2668391679), (21, 889463893), (257, 72679929), (771, 24226643), (1543, 12105471), (1799, 10382847), (2243, 8327571), (4629, 4035157), (5397, 3460949), (6729, 2775857), (10801, 1729353), (15701, 1189653), (32403, 576451), (47103, 396551)]