20611565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{811}}^1$

素因数の和:869

約数の個数: 32

約数和(自身を含む): 29465856

約数和(自身を除く): 8854291

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 221, 299, 391, 811, 1105, 1495, 1955, 4055, 5083, 10543, 13787, 18653, 25415, 52715, 68935, 93265, 179231, 242489, 317101, 896155, 1212445, 1585505, 4122313, 20611565]

約数ペア:

[(1, 20611565), (5, 4122313), (13, 1585505), (17, 1212445), (23, 896155), (65, 317101), (85, 242489), (115, 179231), (221, 93265), (299, 68935), (391, 52715), (811, 25415), (1105, 18653), (1495, 13787), (1955, 10543), (4055, 5083)]