21450730

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43777}}^1$

素因数の和:43798

約数の個数: 24

約数和(自身を含む): 44916228

約数和(自身を除く): 23465498

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43777, 87554, 218885, 306439, 437770, 612878, 1532195, 2145073, 3064390, 4290146, 10725365, 21450730]

約数ペア:

[(1, 21450730), (2, 10725365), (5, 4290146), (7, 3064390), (10, 2145073), (14, 1532195), (35, 612878), (49, 437770), (70, 306439), (98, 218885), (245, 87554), (490, 43777)]