20889164

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 40346880

約数和(自身を除く): 19457716

約数列:

[1, 2, 4, 29, 31, 37, 58, 62, 74, 116, 124, 148, 157, 314, 628, 899, 1073, 1147, 1798, 2146, 2294, 3596, 4292, 4553, 4588, 4867, 5809, 9106, 9734, 11618, 18212, 19468, 23236, 33263, 66526, 133052, 141143, 168461, 180079, 282286, 336922, 360158, 564572, 673844, 720316, 5222291, 10444582, 20889164]

約数ペア:

[(1, 20889164), (2, 10444582), (4, 5222291), (29, 720316), (31, 673844), (37, 564572), (58, 360158), (62, 336922), (74, 282286), (116, 180079), (124, 168461), (148, 141143), (157, 133052), (314, 66526), (628, 33263), (899, 23236), (1073, 19468), (1147, 18212), (1798, 11618), (2146, 9734), (2294, 9106), (3596, 5809), (4292, 4867), (4553, 4588)]