201861380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205981}}^1$

素因数の和:206004

約数の個数: 36

約数和(自身を含む): 493120908

約数和(自身を除く): 291259528

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205981, 411962, 823924, 1029905, 1441867, 2059810, 2883734, 4119620, 5767468, 7209335, 10093069, 14418670, 20186138, 28837340, 40372276, 50465345, 100930690, 201861380]

約数ペア:

[(1, 201861380), (2, 100930690), (4, 50465345), (5, 40372276), (7, 28837340), (10, 20186138), (14, 14418670), (20, 10093069), (28, 7209335), (35, 5767468), (49, 4119620), (70, 2883734), (98, 2059810), (140, 1441867), (196, 1029905), (245, 823924), (490, 411962), (980, 205981)]