20865702

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 49787136

約数和(自身を除く): 28921434

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 83, 143, 166, 249, 286, 293, 429, 498, 586, 858, 879, 913, 1079, 1758, 1826, 2158, 2739, 3223, 3237, 3809, 5478, 6446, 6474, 7618, 9669, 11427, 11869, 19338, 22854, 23738, 24319, 35607, 41899, 48638, 71214, 72957, 83798, 125697, 145914, 251394, 267509, 316147, 535018, 632294, 802527, 948441, 1605054, 1896882, 3477617, 6955234, 10432851, 20865702]

約数ペア:

[(1, 20865702), (2, 10432851), (3, 6955234), (6, 3477617), (11, 1896882), (13, 1605054), (22, 948441), (26, 802527), (33, 632294), (39, 535018), (66, 316147), (78, 267509), (83, 251394), (143, 145914), (166, 125697), (249, 83798), (286, 72957), (293, 71214), (429, 48638), (498, 41899), (586, 35607), (858, 24319), (879, 23738), (913, 22854), (1079, 19338), (1758, 11869), (1826, 11427), (2158, 9669), (2739, 7618), (3223, 6474), (3237, 6446), (3809, 5478)]