20121986740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1453}}^1\times {\mathrm{16103}}^1$

素因数の和:17608

約数の個数: 48

約数和(自身を含む): 43271319168

約数和(自身を除く): 23149332428

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1453, 2906, 5812, 7265, 14530, 16103, 29060, 32206, 62479, 64412, 80515, 124958, 161030, 249916, 312395, 322060, 624790, 692429, 1249580, 1384858, 2769716, 3462145, 6924290, 13848580, 23397659, 46795318, 93590636, 116988295, 233976590, 467953180, 1006099337, 2012198674, 4024397348, 5030496685, 10060993370, 20121986740]

約数ペア:

[(1, 20121986740), (2, 10060993370), (4, 5030496685), (5, 4024397348), (10, 2012198674), (20, 1006099337), (43, 467953180), (86, 233976590), (172, 116988295), (215, 93590636), (430, 46795318), (860, 23397659), (1453, 13848580), (2906, 6924290), (5812, 3462145), (7265, 2769716), (14530, 1384858), (16103, 1249580), (29060, 692429), (32206, 624790), (62479, 322060), (64412, 312395), (80515, 249916), (124958, 161030)]