21659020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63703}}^1$

素因数の和:63729

約数の個数: 24

約数和(自身を含む): 48160224

約数和(自身を除く): 26501204

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63703, 127406, 254812, 318515, 637030, 1082951, 1274060, 2165902, 4331804, 5414755, 10829510, 21659020]

約数ペア:

[(1, 21659020), (2, 10829510), (4, 5414755), (5, 4331804), (10, 2165902), (17, 1274060), (20, 1082951), (34, 637030), (68, 318515), (85, 254812), (170, 127406), (340, 63703)]