21955336

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 26025464

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 41, 52, 76, 82, 104, 152, 164, 247, 271, 328, 494, 533, 542, 779, 988, 1066, 1084, 1558, 1976, 2132, 2168, 3116, 3523, 4264, 5149, 6232, 7046, 10127, 10298, 11111, 14092, 20254, 20596, 22222, 28184, 40508, 41192, 44444, 66937, 81016, 88888, 133874, 144443, 211109, 267748, 288886, 422218, 535496, 577772, 844436, 1155544, 1688872, 2744417, 5488834, 10977668, 21955336]

約数ペア:

[(1, 21955336), (2, 10977668), (4, 5488834), (8, 2744417), (13, 1688872), (19, 1155544), (26, 844436), (38, 577772), (41, 535496), (52, 422218), (76, 288886), (82, 267748), (104, 211109), (152, 144443), (164, 133874), (247, 88888), (271, 81016), (328, 66937), (494, 44444), (533, 41192), (542, 40508), (779, 28184), (988, 22222), (1066, 20596), (1084, 20254), (1558, 14092), (1976, 11111), (2132, 10298), (2168, 10127), (3116, 7046), (3523, 6232), (4264, 5149)]