21450765

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4751}}^1$

素因数の和:4809

約数の個数: 32

約数和(自身を含む): 40144896

約数和(自身を除く): 18694131

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4751, 14253, 23755, 33257, 71265, 99771, 166285, 204293, 498855, 612879, 1021465, 1430051, 3064395, 4290153, 7150255, 21450765]

約数ペア:

[(1, 21450765), (3, 7150255), (5, 4290153), (7, 3064395), (15, 1430051), (21, 1021465), (35, 612879), (43, 498855), (105, 204293), (129, 166285), (215, 99771), (301, 71265), (645, 33257), (903, 23755), (1505, 14253), (4515, 4751)]