20091555

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1097}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 39053664

約数和(自身を除く): 18962109

約数列:

[1, 3, 5, 9, 11, 15, 33, 37, 45, 55, 99, 111, 165, 185, 333, 407, 495, 555, 1097, 1221, 1665, 2035, 3291, 3663, 5485, 6105, 9873, 12067, 16455, 18315, 36201, 40589, 49365, 60335, 108603, 121767, 181005, 202945, 365301, 446479, 543015, 608835, 1339437, 1826505, 2232395, 4018311, 6697185, 20091555]

約数ペア:

[(1, 20091555), (3, 6697185), (5, 4018311), (9, 2232395), (11, 1826505), (15, 1339437), (33, 608835), (37, 543015), (45, 446479), (55, 365301), (99, 202945), (111, 181005), (165, 121767), (185, 108603), (333, 60335), (407, 49365), (495, 40589), (555, 36201), (1097, 18315), (1221, 16455), (1665, 12067), (2035, 9873), (3291, 6105), (3663, 5485)]