20986103180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21414391}}^1$

素因数の和:21414414

約数の個数: 36

約数和(自身を含む): 51266054448

約数和(自身を除く): 30279951268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21414391, 42828782, 85657564, 107071955, 149900737, 214143910, 299801474, 428287820, 599602948, 749503685, 1049305159, 1499007370, 2098610318, 2998014740, 4197220636, 5246525795, 10493051590, 20986103180]

約数ペア:

[(1, 20986103180), (2, 10493051590), (4, 5246525795), (5, 4197220636), (7, 2998014740), (10, 2098610318), (14, 1499007370), (20, 1049305159), (28, 749503685), (35, 599602948), (49, 428287820), (70, 299801474), (98, 214143910), (140, 149900737), (196, 107071955), (245, 85657564), (490, 42828782), (980, 21414391)]