21050890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42961}}^1$

素因数の和:42982

約数の個数: 24

約数和(自身を含む): 44079012

約数和(自身を除く): 23028122

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42961, 85922, 214805, 300727, 429610, 601454, 1503635, 2105089, 3007270, 4210178, 10525445, 21050890]

約数ペア:

[(1, 21050890), (2, 10525445), (5, 4210178), (7, 3007270), (10, 2105089), (14, 1503635), (35, 601454), (49, 429610), (70, 300727), (98, 214805), (245, 85922), (490, 42961)]