21005465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{701}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 27243216

約数和(自身を除く): 6237751

約数列:

[1, 5, 13, 65, 461, 701, 2305, 3505, 5993, 9113, 29965, 45565, 323161, 1615805, 4201093, 21005465]

約数ペア:

[(1, 21005465), (5, 4201093), (13, 1615805), (65, 323161), (461, 45565), (701, 29965), (2305, 9113), (3505, 5993)]