20788731649

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{563}}^1\times {\mathrm{887}}^1$

素因数の和:1789

約数の個数: 32

約数和(自身を含む): 25161799680

約数和(自身を除く): 4373068031

約数列:

[1, 7, 19, 133, 313, 563, 887, 2191, 3941, 5947, 6209, 10697, 16853, 41629, 74879, 117971, 176219, 277631, 499381, 1233533, 1943417, 3348161, 3495667, 5274989, 9488239, 23437127, 36924923, 66417673, 156306253, 1094143771, 2969818807, 20788731649]

約数ペア:

[(1, 20788731649), (7, 2969818807), (19, 1094143771), (133, 156306253), (313, 66417673), (563, 36924923), (887, 23437127), (2191, 9488239), (3941, 5274989), (5947, 3495667), (6209, 3348161), (10697, 1943417), (16853, 1233533), (41629, 499381), (74879, 277631), (117971, 176219)]