20648012

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 46903248

約数和(自身を除く): 26255236

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 61, 77, 98, 122, 154, 157, 196, 244, 308, 314, 427, 539, 628, 671, 854, 1078, 1099, 1342, 1708, 1727, 2156, 2198, 2684, 2989, 3454, 4396, 4697, 5978, 6908, 7693, 9394, 9577, 11956, 12089, 15386, 18788, 19154, 24178, 30772, 32879, 38308, 48356, 65758, 67039, 84623, 105347, 131516, 134078, 169246, 210694, 268156, 338492, 421388, 469273, 737429, 938546, 1474858, 1877092, 2949716, 5162003, 10324006, 20648012]

約数ペア:

[(1, 20648012), (2, 10324006), (4, 5162003), (7, 2949716), (11, 1877092), (14, 1474858), (22, 938546), (28, 737429), (44, 469273), (49, 421388), (61, 338492), (77, 268156), (98, 210694), (122, 169246), (154, 134078), (157, 131516), (196, 105347), (244, 84623), (308, 67039), (314, 65758), (427, 48356), (539, 38308), (628, 32879), (671, 30772), (854, 24178), (1078, 19154), (1099, 18788), (1342, 15386), (1708, 12089), (1727, 11956), (2156, 9577), (2198, 9394), (2684, 7693), (2989, 6908), (3454, 5978), (4396, 4697)]