20121939

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 31589712

約数和(自身を除く): 11467773

約数列:

[1, 3, 9, 27, 41, 73, 81, 83, 123, 219, 249, 369, 657, 747, 1107, 1971, 2241, 2993, 3321, 3403, 5913, 6059, 6723, 8979, 10209, 18177, 26937, 30627, 54531, 80811, 91881, 163593, 242433, 248419, 275643, 490779, 745257, 2235771, 6707313, 20121939]

約数ペア:

[(1, 20121939), (3, 6707313), (9, 2235771), (27, 745257), (41, 490779), (73, 275643), (81, 248419), (83, 242433), (123, 163593), (219, 91881), (249, 80811), (369, 54531), (657, 30627), (747, 26937), (1107, 18177), (1971, 10209), (2241, 8979), (2993, 6723), (3321, 6059), (3403, 5913)]