20215723075

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{311}}^1\times {\mathrm{487}}^1$

素因数の和:1108

約数の個数: 48

約数和(自身を含む): 26620439040

約数和(自身を除く): 6404715965

約数列:

[1, 5, 19, 25, 95, 281, 311, 475, 487, 1405, 1555, 2435, 5339, 5909, 7025, 7775, 9253, 12175, 26695, 29545, 46265, 87391, 133475, 136847, 147725, 151457, 231325, 436955, 684235, 757285, 1660429, 2184775, 2600093, 2877683, 3421175, 3786425, 8302145, 13000465, 14388415, 41510725, 42559417, 65002325, 71942075, 212797085, 808628923, 1063985425, 4043144615, 20215723075]

約数ペア:

[(1, 20215723075), (5, 4043144615), (19, 1063985425), (25, 808628923), (95, 212797085), (281, 71942075), (311, 65002325), (475, 42559417), (487, 41510725), (1405, 14388415), (1555, 13000465), (2435, 8302145), (5339, 3786425), (5909, 3421175), (7025, 2877683), (7775, 2600093), (9253, 2184775), (12175, 1660429), (26695, 757285), (29545, 684235), (46265, 436955), (87391, 231325), (133475, 151457), (136847, 147725)]