20418489

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 36796032

約数和(自身を除く): 16377543

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 107, 117, 233, 273, 321, 699, 749, 819, 963, 1391, 1631, 2097, 2247, 3029, 4173, 4893, 6741, 9087, 9737, 12519, 14679, 21203, 24931, 27261, 29211, 63609, 74793, 87633, 174517, 190827, 224379, 324103, 523551, 972309, 1570653, 2268721, 2916927, 6806163, 20418489]

約数ペア:

[(1, 20418489), (3, 6806163), (7, 2916927), (9, 2268721), (13, 1570653), (21, 972309), (39, 523551), (63, 324103), (91, 224379), (107, 190827), (117, 174517), (233, 87633), (273, 74793), (321, 63609), (699, 29211), (749, 27261), (819, 24931), (963, 21203), (1391, 14679), (1631, 12519), (2097, 9737), (2247, 9087), (3029, 6741), (4173, 4893)]