20955088

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:332

約数の個数: 80

約数和(自身を含む): 51532416

約数和(自身を除く): 30577328

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 73, 77, 88, 112, 146, 154, 176, 233, 292, 308, 466, 511, 584, 616, 803, 932, 1022, 1168, 1232, 1606, 1631, 1864, 2044, 2563, 3212, 3262, 3728, 4088, 5126, 5621, 6424, 6524, 8176, 10252, 11242, 12848, 13048, 17009, 17941, 20504, 22484, 26096, 34018, 35882, 41008, 44968, 68036, 71764, 89936, 119063, 136072, 143528, 187099, 238126, 272144, 287056, 374198, 476252, 748396, 952504, 1309693, 1496792, 1905008, 2619386, 2993584, 5238772, 10477544, 20955088]

約数ペア:

[(1, 20955088), (2, 10477544), (4, 5238772), (7, 2993584), (8, 2619386), (11, 1905008), (14, 1496792), (16, 1309693), (22, 952504), (28, 748396), (44, 476252), (56, 374198), (73, 287056), (77, 272144), (88, 238126), (112, 187099), (146, 143528), (154, 136072), (176, 119063), (233, 89936), (292, 71764), (308, 68036), (466, 44968), (511, 41008), (584, 35882), (616, 34018), (803, 26096), (932, 22484), (1022, 20504), (1168, 17941), (1232, 17009), (1606, 13048), (1631, 12848), (1864, 11242), (2044, 10252), (2563, 8176), (3212, 6524), (3262, 6424), (3728, 5621), (4088, 5126)]