20121120260

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{971}}^1\times {\mathrm{14593}}^1$

素因数の和:15644

約数の個数: 48

約数和(自身を含む): 42896552832

約数和(自身を除く): 22775432572

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 971, 1420, 1942, 3884, 4855, 9710, 14593, 19420, 29186, 58372, 68941, 72965, 137882, 145930, 275764, 291860, 344705, 689410, 1036103, 1378820, 2072206, 4144412, 5180515, 10361030, 14169803, 20722060, 28339606, 56679212, 70849015, 141698030, 283396060, 1006056013, 2012112026, 4024224052, 5030280065, 10060560130, 20121120260]

約数ペア:

[(1, 20121120260), (2, 10060560130), (4, 5030280065), (5, 4024224052), (10, 2012112026), (20, 1006056013), (71, 283396060), (142, 141698030), (284, 70849015), (355, 56679212), (710, 28339606), (971, 20722060), (1420, 14169803), (1942, 10361030), (3884, 5180515), (4855, 4144412), (9710, 2072206), (14593, 1378820), (19420, 1036103), (29186, 689410), (58372, 344705), (68941, 291860), (72965, 275764), (137882, 145930)]