20703640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12037}}^1$

素因数の和:12091

約数の個数: 32

約数和(自身を含む): 47670480

約数和(自身を除く): 26966840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12037, 24074, 48148, 60185, 96296, 120370, 240740, 481480, 517591, 1035182, 2070364, 2587955, 4140728, 5175910, 10351820, 20703640]

約数ペア:

[(1, 20703640), (2, 10351820), (4, 5175910), (5, 4140728), (8, 2587955), (10, 2070364), (20, 1035182), (40, 517591), (43, 481480), (86, 240740), (172, 120370), (215, 96296), (344, 60185), (430, 48148), (860, 24074), (1720, 12037)]