21427317

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1549}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 32643000

約数和(自身を除く): 11215683

約数列:

[1, 3, 9, 29, 53, 87, 159, 261, 477, 1537, 1549, 4611, 4647, 13833, 13941, 44921, 82097, 134763, 246291, 404289, 738873, 2380813, 7142439, 21427317]

約数ペア:

[(1, 21427317), (3, 7142439), (9, 2380813), (29, 738873), (53, 404289), (87, 246291), (159, 134763), (261, 82097), (477, 44921), (1537, 13941), (1549, 13833), (4611, 4647)]